I have an 84 SVO that has wing-hatch problems. The upper wing has a bit of sag in it, and is starting to split on the one side. Any ideas on how to bond it together? When I took off the upper wing, I saw that the screws were not originial and were lag screws sunk into a second set of holes under the wing. Any idea of were I can get correct screws and any idea on how to re-fasten to the existing holes? Also, the lower wing has some of the studs broken off the go through the hatch. can I fill these with silicon or some suitable type product? thanks