Because of their high profile in the hobby, I bought 3 packages (72) CA hinges from Great Planes. They seem to have a plastic center with some fuzzy stuff on both sides. I cut the slots with a Slot Machine and they were very tight. When I tried to slide the hinges into the slots, it just scraped the fuzzy stuff off and wadded it up in the gap between the wing and the airleron. Is there a way to eliminate this problem? Altrnatively, I am sure there are hinges available that work better than these. Anyone know where to get better hinges?