I'm with Dave Katt. Here's some pics of a sliver of wood added to fill the gap. This can be pretty invisible if the stock surface is well proud of final level when the sliver is added, so the epoxy mess is sanded off - just leaving a very thin black line. Pesky tang inletting

The fix is on the bottom tang


The rectangles line shows the epoxy blackened sliver and the ditdot line shows where the fix line is barely visible.


Photoshopped to better show the fix