Well, last weekend was my first attempt at installing the acrylic windshield on the Model IV...it didn't go well to say the least. I didn't even get a hole drilled and it cracked at the top of the pilots side (inside the hole) about 3/4" in. It was stop-drilled at that point and I decided I didn't want to mess with it any more. I went and got some polycarb and that went on very well.
I decided to try my hand at the bubble doors...nope. This stuff is a real PITA. My opinion is a person shouldn't have to tip-toe around a plane trying to get it built.