I have only had a couple of planes I have run a pin through the hinge and they were ones that someone else did not glue right. Slot before covering, cover, slit the covering and check again. I install one side at a time and let cure. put epoxy on the hinge and some in the slot and work the hinge in. I use the vaseline trick and wipe of excess. They are so much nicer than CA and are easer to deal with.