So, I bought a '99 Coleman/Fleetwood SunValley a few weeks ago, canvas looked great, overall condition was very good! PO's claimed to use it frequently, but closer examination seems to indicate it had sat for some time. One of the cables had snapped, so we got it for a good price, and thought we were getting a great deal requiring only a bit of work. I replaced the snapped cable, put some grease on the threads, silicone on the cables, and cranked the top up, had it set up for a week or so, then we were going away for an 8 day trip, so closed it up. When we got back, went to set it up again, cranked the top up about a foot, then swoosh! Top dropped right back down! Turning the crank, the whiffletree threaded rod was turning, but the nut wasn't lifting. This is the whiffletree type with the Delrin Nut, and it was obviously stripped. Well, after being mad at the PO's , mad at Fleetwood for using a plastic nut , and ultimately mad at myself for not checking it closer , I searched for replacement parts. The local RV dealership said they cringe when someone calls in with issues with Coleman's , and said they did not know where to find parts, did not know any shops nearby that would fix it, and that my best bet would be to search online. I had already searched these forums, and had seen a few sites that sell aftermarket replacement whiffletree assemblies, but we're planning a camping trip for Labor Day weekend, and couldn't wait for shipping. I came across this thread : http://www.popupportal.com/index.php?topic=71156.0;topicseen This was a fairly straightforward fix, decent replacement, and not counting tools that I needed, the parts cost <$10 ! For this price, if this lasts one season, I can replace every year, but I am thinking as long as I stay on top of greasing it, this will last quite a while. I just want to thank b1pig for his post!