<span style="font-family: Comic Sans MS">thank you everyone for your replies. i think the best way to go about it is going to be cutting the entire area out and making blocks to fit in afterwards. not sure why i didn't think about this before. i've had to do this on a leading edge of a foam core balsa sheeted wing before. not that difficult. i just didn't want to cut anything away that wasn't necessary. i tried some CA debonder, with no luck. i'm not sure why anyone would waste their money on that stuff. it's never worked for anything i've tried it on before.the drilling with a brass tube sounds good as well, but i would have to go all the way from the trailing edge of the aileron itself as they are the type with the sheet and ribs on the top and bottom of it. kind of like this. again, told you i'm not an artist. but you get the idea. cutting the blocks would be sanded down and you won't be able to see through the covering anyways, so...</span>