diff --git a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/OCRService.java b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/OCRService.java
index ddef5ec..f98db93 100644
--- a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/OCRService.java
+++ b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/OCRService.java
@@ -28,6 +28,8 @@ import com.knecon.fforesight.service.ocr.processor.service.scriptdetection.FontS
 import com.knecon.fforesight.service.ocr.processor.service.threads.OCRThread;
 import com.knecon.fforesight.service.ocr.processor.settings.OcrServiceSettings;
 
+import io.micrometer.observation.ObservationRegistry;
+import io.micrometer.observation.annotation.Observed;
 import lombok.AccessLevel;
 import lombok.RequiredArgsConstructor;
 import lombok.SneakyThrows;
@@ -48,6 +50,7 @@ public class OCRService {
     OcrResultWriter ocrResultWriter;
     GhostScriptService ghostScriptService;
     FontStyleDetector boldDetector;
+    ObservationRegistry registry;
 
 
     /**
@@ -59,6 +62,7 @@ public class OCRService {
      * @param fileId    Id of file
      * @param out       OutputStream where to write to
      */
+    @Observed(name = "OCRService", contextualName = "run-ocr-on-document")
     @SneakyThrows
     public void runOcrOnDocument(String dossierId, String fileId, OutputStream out) {
 
diff --git a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/GhostScriptOutputHandler.java b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/GhostScriptOutputHandler.java
index 0dd0c60..464a18c 100644
--- a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/GhostScriptOutputHandler.java
+++ b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/GhostScriptOutputHandler.java
@@ -109,7 +109,6 @@ public class GhostScriptOutputHandler extends Thread {
         if (imageFile == null) {
             throw new IllegalArgumentException(String.format("Page number %d does not exist in this thread. It only has pagenumbers %s", pageNumber, pagesToProcess.keySet()));
         }
-        assert new File(imageFile.absoluteFilePath()).isFile();
         renderedPageImageFileOutput.add(imageFile);
     }
 
diff --git a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/ImageProcessingThread.java b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/ImageProcessingThread.java
index 35dc148..446f567 100644
--- a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/ImageProcessingThread.java
+++ b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/threads/ImageProcessingThread.java
@@ -198,8 +198,10 @@ public class ImageProcessingThread extends Thread {
             grayScale = pix;
         } else if (pix.d == 32) {
             grayScale = Leptonica1.pixConvertRGBToGrayFast(pix);
+            LeptUtils.disposePix(pix);
         } else if (pix.d == 1) {
             grayScale = Leptonica1.pixConvert1To8(null, pix, (byte) 0, (byte) 255);
+            LeptUtils.disposePix(pix);
         } else {
             throw new UnsupportedOperationException(String.format("Unknown pix format with bpp of %d", pix.d));
         }
@@ -208,36 +210,33 @@ public class ImageProcessingThread extends Thread {
         float targetFactor = targetDpi / imageDpi;
         if (targetFactor > 2.1) {
             scaledUp = Leptonica1.pixScaleGray4xLI(grayScale);
+            LeptUtils.disposePix(grayScale);
         } else if (targetFactor > 1.1) {
             scaledUp = Leptonica1.pixScaleGray2xLI(grayScale);
+            LeptUtils.disposePix(grayScale);
         } else {
             scaledUp = grayScale;
         }
 
         // remove noise and prep for Otsu
         gaussian = Leptonica1.pixConvolve(scaledUp, gaussianKernel, 8, 1);
+        LeptUtils.disposePix(scaledUp);
 
         // Threshold to binary
         if (pix.w < 100 || pix.h < 100) {
             binarized = Leptonica1.pixThresholdToBinary(gaussian, 170);
         } else {
             binarized = Leptonica1.pixOtsuThreshOnBackgroundNorm(gaussian, null, 50, 50, 165, 10, 100, 5, 5, 0.2f, null);
-
             if (binarized == null) { // Sometimes Otsu just fails, then we binarize directly
                 binarized = Leptonica1.pixThresholdToBinary(gaussian, 170);
             }
         }
-
-        LeptUtils.disposePix(pix);
-        LeptUtils.disposePix(grayScale);
-        LeptUtils.disposePix(scaledUp);
         LeptUtils.disposePix(gaussian);
 
         return binarized;
     }
 
 
-
     private static ITessAPI.TessBaseAPI initDetectionScriptHandle() {
 
         ITessAPI.TessBaseAPI handle = TessAPI1.TessBaseAPICreate();
diff --git a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/utils/Tesseract2.java b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/utils/Tesseract2.java
index 61870fa..d85dc46 100644
--- a/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/utils/Tesseract2.java
+++ b/ocr-service-v1/ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/utils/Tesseract2.java
@@ -138,11 +138,4 @@ public class Tesseract2 extends Tesseract1 {
         return renderer;
     }
 
-    @Override
-    protected void dispose() {
-
-        TessBaseAPIEnd(getHandle());
-        TessBaseAPIDelete(getHandle());
-    }
-
 }
diff --git a/ocr-service-v1/ocr-service-server/src/main/java/com/knecon/fforesight/service/ocr/v1/server/queue/OcrMessageReceiver.java b/ocr-service-v1/ocr-service-server/src/main/java/com/knecon/fforesight/service/ocr/v1/server/queue/OcrMessageReceiver.java
index 6c33d7a..56f74ef 100644
--- a/ocr-service-v1/ocr-service-server/src/main/java/com/knecon/fforesight/service/ocr/v1/server/queue/OcrMessageReceiver.java
+++ b/ocr-service-v1/ocr-service-server/src/main/java/com/knecon/fforesight/service/ocr/v1/server/queue/OcrMessageReceiver.java
@@ -21,6 +21,7 @@ import com.knecon.fforesight.service.ocr.v1.api.model.DocumentRequest;
 import com.iqser.red.service.persistence.service.v1.api.shared.model.dossiertemplate.dossier.file.FileErrorInfo;
 
 import feign.FeignException;
+import io.micrometer.observation.annotation.Observed;
 import lombok.AccessLevel;
 import lombok.RequiredArgsConstructor;
 import lombok.experimental.FieldDefaults;
diff --git a/ocr-service-v1/ocr-service-server/src/main/resources/vcpkg.json b/ocr-service-v1/ocr-service-server/src/main/resources/vcpkg.json
index 1f3a0a1..da9da43 100644
--- a/ocr-service-v1/ocr-service-server/src/main/resources/vcpkg.json
+++ b/ocr-service-v1/ocr-service-server/src/main/resources/vcpkg.json
@@ -6,7 +6,7 @@
   "overrides": [
     {
       "name": "tesseract",
-      "version": "5.3.2"
+      "version": "5.3.3"
     },
     {
       "name": "leptonica",
diff --git a/ocr-service-v1/ocr-service-server/src/test/java/com/knecon/fforesight/service/ocr/v1/server/OcrServiceIntegrationTest.java b/ocr-service-v1/ocr-service-server/src/test/java/com/knecon/fforesight/service/ocr/v1/server/OcrServiceIntegrationTest.java
index 6c4d124..2c3e40d 100644
--- a/ocr-service-v1/ocr-service-server/src/test/java/com/knecon/fforesight/service/ocr/v1/server/OcrServiceIntegrationTest.java
+++ b/ocr-service-v1/ocr-service-server/src/test/java/com/knecon/fforesight/service/ocr/v1/server/OcrServiceIntegrationTest.java
@@ -64,7 +64,7 @@ public class OcrServiceIntegrationTest extends AbstractTest {
     @SneakyThrows
     public void testOcr() {
 
-        String text = testOCR("files/402Study.pdf");
+        String text = testOCR("files/UNAPPROVED_VV-331155 (1).pdf");
     }