I just turned 40 hours of flight time on my Edge and so far all I have lost is 2 screws both on the right side of the canopy so now i put a small slice of fuel line over the screw under the washer to squish when i tighten the canopy down Im sure the same thing would work on the wing bolts. I ussually tighten the wing bolts up enough not to worry about it. I also did the same thing to the 4 cowelling bolts and I havent had a bit of trouble with them without using any locktight.