Hello to all. I am new here and I need help with my lift system. I bought a coleman pop up camper that is from the 80’s. I replaced an entire telescope stop with new cables. The lift system is really hard, I really hurt my hands trying to pop it up and when it was finally up the door didn’t fit. There were no room to install it. The roof was to low. I took the roof down again. Adjust the cables a little but when I tried to pop it up again it was horrible hard. The chain even skips sometimes What do I do? Help please!!!