I'm still aways away from starting covering but using Oratex on a model 1 has at least 1 challenge. The little triangular windows aft of the doors don't have the same frame that the 5 and later do. Originally for the model 1 you stitched the fabric to the piece of lexan, glued the fabric to the fuselage tubing and then finished it with whatever process you were using. Problem with Oratex is the heat needed to shrink it will most likely distort the lexan.

So I'm guessing I need some kind of frame work to mount to the fuselage tubing? Anyone done anything like this before?