Well, after I went out to look at the wing holes, I discovered that the aft side holes were wallowed-out a bit - only about the last 1/4" Rats.
I'm going to order new aft wing attach brackets and gussets, and replace both wing attach blocks on the right wing. This is the wing that sits aft-most in the fuselage spar tunnel. The left wing is just fine.
So, tonight was spent making one of the new attach blocks. Got it shaped correctly and got the holes drilled correctly where it bolts to the wing spar. Not really sure how I want to get the large 3/8" hole drilled at this point, so I'm holding off to see what others have done.