I've been moving along. The v wheel and guide track took forever to come then I was short of track and had to wait another forever. The joys of prototyping, you don't really know how it's going to work. The wait was worth it. The top section moves up and down smoothly and there is very little movement when it's up.
I also discovered I had undersized a wire on the actuators so they are moving closer to the same speed now. I will still use the pwms but there is less variation. I'm waiting to install the side panels until I've run it up and down a few more times.
The insulation is all fitted and I'm getting serious about the interior layout. Installed the Propex today.
I think the whole slide in discussion is a bit overblown. I've looked at a lot of 'bent frame' posts and it appears to me they happened at high speed on very rough roads. I'm not building a desert racer or trail runner. I will be mainly on highway or graded logging roads. I bought an ATV years ago so I could stop beating the pickup in order to go that last mile. That said, I appreciate your comments Eugene regarding the center of gravity. That was one of the reasons I wanted a pop up instead of a Kimbo style. Also, my Colorado is long box and the camper doesn't extend past the bumper. As well, I've been very thoughtful about keeping the balance point between the axles.