Hi guys...interesting thread...as for fishing your servo leads thru the wing...don't waste time poking around with string and fishing sinkers, or probing with a ny-rod....simply take a length of light string, or common sewing thread, and let your vaccuum cleaner hose suck the string thru the wing panels. It'll go around corners, and zip right on thru in a second or two. Be sure to anchor the end of the string or it'll all go right on thru. I've never seen anything so slick and easy. Of course, you must have an open path for the string to follow the air current. And...for those times when that fails, (no open path), I use a 24 inch drill bit. Not pretty, but extremely effective.
Good luck.