Supports were already marked with a green marker under the edge molding. Had to replace 4 cross frames and repair 3 due to rotting wood. Wow that wood is cheap they install at the factory. Even the good cross frames had very porous and rough wood. The wires run down the camper close to center vent. To avoid rewiring I made the cross supports and did not screw the bracing together on one side so I could run the wires in the framing. New wood is thicker than factory framing stuff so had to compensate.
At this point I was going to criticize the factory for not using better wood and calculated how little they saved using inferior wood. In reality, if the previous owner had made his repairs correctly, the factory installed roof would have been sufficient.
Well it is almost done and I will have the peace of mind knowing it is sealed for my lifetime.
Chuck