Hello All! I am new to the site and have been combing through all of the posts. This place is super informative! So much so that I have a question for you..... I recently bought a 1996 Coleman Laredo Pop Up a couple of weeks ago. The guy assured me that everything was in proper working order, and it was set up when I arrived (you can see where this is going, I am sure- big mistake)... Brought it home, put in garage, and set it up about half way so that I could take out the nasty sheet vinyl and give it a quick paint job on the inside (the roof ac and ceiling shelving prevented it from going any further). I admired my work, closed it up, and loaded up the kids to take it to the desert this past weekend for the meteor shower. I cranked it up to set up camp and I heard a loud pop. Looked at all the cables- all in order. Went to turn the crank to back it down (thinking maybe went too far) and it kept thumping with something bumping against the floor of the trailer. It was getting dark so I couldn't mess with it anymore, and I figured it was set up, so future me would deal with it in morning when it was time to break down camp. I spent all night looking through posts here and watching youtube videos, convinced I knew the issue. Tried the vise grip pliers on the drive shaft trick but the top wouldn't budge. Still the thumping noise. Pulled off the cover protecting the whiffle tree and found the problem..... The jerk that sold me the trailer had a bandaid repair on a broken thrust nut in the form of a pipe clamp around it to secure it! It was enough to get it to go down once, but the force of bringng the top all the way up caused the "fix" to fail. Needless to say I need to replace a thrust nut (and a whiffle tree since I had to close the top by rotating the whiffle tree by hand with pliers and messed up the threads at the end- I am sure there was a way to close it without damaging whiffle tree but I wasn't thinking straight in 110 deg desert heat with 3 kids ready to go home). My question at the end of this (super long) post is- how hard is it to replace the whiffle tree and thrust nut? I am tempted to just get the whiffle tree, thrust nut, and crank assembly rebuild kit and replace the whole thing while I am down there. I really don't want to take it to someone to repair because I don't want to drop upwards of a thousand dollars or more on a trailer I paid $2,500 for. I consider myself somewhat mechanical but am not a mechanic by trade. Thoughts (aside from me needing to work on brevity)?