Lots of work the last few days getting the slide-up operating. It's working now, not perfectly, but working. Some fine tuning is in order.
Here's the set up. The lifters keep things real stable side to side but not front to back so needed a system to keep things snug that way. I used some UHMW polyethylene I had sitting around. On the wall of the camper I mounted some strips, riveted in to the wall, two on front and two on back. Here's one:
On the slide up I used some small aluminum angle to attach four strips of UHMW that align with the other strips.
My hopes were that the slippery plastic would slide against the slippery plastic when going up and down while giving a firm fit and eliminate any front-back play. More or less works. May re-engineer this at some point but for now it is working okay.
Partially settled on a method for sealing the gap between the slide up and the main body. First method seal and keeps the slide-up from going up too high. I didn't get good photos but here's the result:
It's a downward-facing bulb seal that meets up with the inward-facing lip on the bottom edge of the slide up. To get it to work I riveted 1/2"X1/2" aluminum angle to the camper wall all the way around except where the windows are. This just cleared the lip on the slide up and allowed it to lower. Then, I screwed the wider flat aluminum stock (which is holding the bulb seal) to the angle. When the slide-up comes up, bulb seal meets the lip and creates a pretty good seal. There is probably a more elegant way of doing this but it's the best I could come up with
This approach won't work where the windows are. I got a brush seal for those sections but I realized my original plan for how that would work isn't going to work. Probably need to get the windows in and then stare at it.
Picked up a second flat/bendable solar panel and taped them both down with stuff called Eterna Bond. 200w ready to go.
I think that means the roof is ready to install. Better get to it...