diff --git a/src/NTwain/TwainAppSession.Callbacks.cs b/src/NTwain/TwainAppSession.Callbacks.cs
index 16fb049..5eea847 100644
--- a/src/NTwain/TwainAppSession.Callbacks.cs
+++ b/src/NTwain/TwainAppSession.Callbacks.cs
@@ -87,6 +87,7 @@ namespace NTwain
     }
 
     bool _closeDsRequested;
+    bool _inTransfer;
 
     private void HandleSourceMsg(MSG msg, [CallerMemberName] string? caller = null)
     {
@@ -95,16 +96,27 @@ namespace NTwain
       // the reason we post these to the background is
       // if they're coming from UI message loop then
       // this needs to return asap (?)
+
       switch (msg)
       {
         case MSG.XFERREADY:
+          // some sources spam this even during transfer so we gate it
+          if (!_inTransfer)
+          {
+            _inTransfer = true;
+            _bgPendingMsgs.Add(msg);
+          }
+          break;
         case MSG.DEVICEEVENT:
         case MSG.CLOSEDSOK:
           _bgPendingMsgs.Add(msg);
           break;
         case MSG.CLOSEDSREQ:
           _closeDsRequested = true;
-          _bgPendingMsgs.Add(msg);
+          if (!_inTransfer)
+          {
+            _bgPendingMsgs.Add(msg);
+          }
           break;
       }
     }
diff --git a/src/NTwain/TwainAppSession.Xfers.cs b/src/NTwain/TwainAppSession.Xfers.cs
index 945617a..f261d0e 100644
--- a/src/NTwain/TwainAppSession.Xfers.cs
+++ b/src/NTwain/TwainAppSession.Xfers.cs
@@ -171,7 +171,7 @@ namespace NTwain
       }
 
       HandleXferCode(sts);
-
+      _inTransfer = false;
       if (State >= STATE.S5)
       {
         _uiThreadMarshaller.BeginInvoke(() =>
@@ -491,6 +491,7 @@ namespace NTwain
       IntPtr lockedPtr = IntPtr.Zero;
       try
       {
+        DGImage.ImageInfo.Get(ref _appIdentity, ref _currentDS, out TW_IMAGEINFO info);
         var sts = WrapInSTS(DGImage.ImageNativeXfer.Get(ref _appIdentity, ref _currentDS, out dataPtr));
         if (sts.RC == TWRC.XFERDONE)
         {
@@ -516,7 +517,8 @@ namespace NTwain
           {
             try
             {
-              DGImage.ImageInfo.Get(ref _appIdentity, ref _currentDS, out TW_IMAGEINFO info);
+              // some sources do not support getting image info in state 7 so
+              // it's up there in the beginning now.
               var args = new TransferredEventArgs(this, info, null, data);
               Transferred?.Invoke(this, args);
             }