That engine's a horse. Very impressive.
Re the wing. This happened to a few of them early on and is discussed towards the front of this thread. There's a relatively simple fix. Just cut a piece of ply to the correct shape and epoxy it into place behind the improperly drilled hole. I used a few pieces of bamboo skewer to pin it in place. Once it cures, drill the hole in the correct location and you're done. Problem solved. Took about half an hour not counting cure time.
Good luck and keep us posted on that engine.
Al