Hi Patrick and hope all is good in your area.
Qualified service personnel only should carry out this procedure.
Homeowners unauthorized personnel should not attempt to erect this roof, and to do so will void the homeowner warranty, on the home.
It is always recommended that the hinge roof be raised before the halves of the home are mated together. It is easiest to jack each half of the roof when there is approximately 12" to 20" between the halves.
Plastic on the roof needs to be removed, it seems to still be there from the photos. Both halves of the home should be mated together at the ridge with supplied bolts/nuts/washers. I don’t see any evidence of that.
The other thing that bothers me, is why the ridge boards are such darker than the trusses.
I only see one king post and a couple of blocks between the ridge boards.
Since there were no king post added and sufficient blocks in between the ridge board,to transfer the load down the rafter, there was nothing to hold the hinged section up properly and that is probably why we see the 2x6 scabs nailed across the hinge.
I would have stated that the erection procedures taken to assemble this hinged modular roof appears to have been done unprofessionally due to the side steps taken to modify the hinged roof assemble and to be further evaluated by a modular home representative for that make Modular.
Hope this helps. :)