I mounted the canopy frame to the fuselage. It fits OK, not so great in the back where the rollbar hits the frame, but I'm sure that will be worked out.
I taped the cardboard along the canopy rails as instructed in order to give the proper distance between the rails and the frame. There's really not a lot you can do to adjust things too much as it's angle and welds along most of the frame. I did make a very slight adjustment to the forward bar to achieve the -- roughly -- 7/16" gap between the skin and the frame.