ORIGINAL: Tom Nied
You haven't done anything wrong, you just need to extend that enlargment up towards where the servo goes in. If you haven't glued the wings halves together yet, you should be able to see what material needs to sanded out so that the servo will go in once the wing is together. Keep grinding and blowing out the sawdust! Welcome to the Avistar club. ha.
I'm going to have to enlarge it by at least an inch
And it will end up to be a rectangle again, not the question mark shape, that I already have