Started the last few times we have raised the roof on our 2007 Niagara. The roof raises fine. Hear the clicking when raising. When lowering the roof. The crank tightens- almost making it difficult to turn. It also is very jerky. You basically have to go extremely slowly. And it feels like it's fighting you to turn. But raising is OK. We have done maintenance to grease the wiffle tree. And lube the pulleys (used the smug hub pics to do this). Nothing looks out of ordinary there. Our back molded panel of camper still has all the factory rivets in it - so to get to the crank - we would need to take these out. And the molding on the ends? Are there pictures of anyone doing this? Anyone have an idea why the crank is so difficult to lower and getting tighter each time - but fine when raising? Before removing the factory riveted panel - thought we would ask here?