Wets..........we've all done things like this, most likely... The second gun I built, a J.P.Beck copy, was kind of a bummerl
I had a beck stock rough shaped in the butt section and a small groove for the barrel. I had an octagon to round Paris
50 cal. barrel to inlet. Got that done, with a lot of difficulty. My problem came when I fit the butt plate. Initially had it
fit with the tip of the heel kicked up in the air.....didn't align with the comb...terrible. Had to sit the gun in a corner for
a few weeks to cool off, not the gun, me. I did go back finally and re-fit it, ended up with about a 12 1/2" pull, and rather short from top to bottom. In the end it didn't turn out too bad, but sure *#)*^~ me at the time. Even now I will end up
with something that doesn't go right, not the way I planned it, but I have learned how to work around these mistakes,
and how to hide them. As for your problem, I think I would try to straighten the tang so that is alighns with the barrel,
draw a centerline on the stock from the middle of the barrel at the breech and to the middle of where the buttplate would
be. I would then square up the right side of the "bad" inlet......remove all the round tapers to a straight line, glue in a
piece of maple similar to what is there and then re-inlet the tang. If you get a pretty good fit on that new wood, stain
it dark and it should work out OK. Use it as a learning experience...............Don