I recently purchased a 1996 Coleman Taos popup. Its main issue was a stripped delrin nut on the wiffle tree. Of course, one cannot purchase just the delrin nut but I did find a aftermarket source for a new wiffle tree. I'm finding reassembling it a challenge, particularly reattaching the wiffle tree to the crank assembly. I can't seem to find a way to reinsert the solid tapered shear pin through the crank hub and wiffle tree screw. I was able to do it on my bench, but underneath the trailer is another matter. There is no room to get a decent swing on a hammer but worse, I can find no way to secure the whole assembly so it doesn't flex while trying to hammer the pin in. I tried to press it in using a c-clamp but there is not enough room to turn the clamp screw. Has anyone had experience reassembling one of these? If so, how did you get the pin in?