I can remember a Learjet we operated, the wing on it was so critical, it had a mixture of flush and dome headed screws along the leading edge to maintain the wing characteristics etc, it was forbidden to remove the leading edge for maintenance, this had to be carried out at a Lear main facility because simply removing the screws and putting them back in the same holes could alter the characteristics. Anyway on take off it meet a goose and boy was the dent to behold.. pictures flew back and forth and eventually Lear told us to take the leading edge off, beat the proverbial out of it to get it back into some shape resembling the leading edge, then fly it back to the USA for replacement and setting up.