Well it wasn't easy but I have to say it went very well. The new solid roof is on the Shasta. It is a far cry from the pin-hole filled flimsy panels that were on it before. This is a solid .040 thick sheet that is normally used on tractor trailers. Its a harder aluminum than the original which means its a bit more difficult to bend and form. But we finally got that.
The small panels were eliminated at the rear window so now there is only 1 seam at this point instead of 2. the union was made out of the end of one of these panels. This connects the new roof to the original lower rear panel and sealant keeps it leak tight.
Have a look: