[Crex]

Originally Posted by lbarks67

How about trimming the handles back and attaching a suitable spacer material in there this will give you the chance to fix that gap and add a bit of contrast to boot then it wasn't a mistake you meant it

Since you can't/won't redo the scales, this would be my approach as well. Pretty simple solution.
Just make sure you use quality epoxy and measure more than once before you mark then stay on that mark. Nobody said knife making is easy.