I have Truvativ Holzfeller cranks, and whenever I remove pedals, it feels like the pedals don't wanna come out. When installing pedals it's fine, but there is a whole lotta resistance when removing pedals. Is this a potential problem? If so, is there a way to remedy this issue? I've looked at the threads on the pedals and the cranks, and they look undamaged, but I'm not really sure what's going on.