So instead of the Testors stuff I picked up a bottle of Micro Krystal Klear, which does the same things. The PV-1 windows are bigger than the max 1/4" stated, but a piece of acetate on the inside provided a nice support.
Things aren't done curing, but here's the window.
Did you try without the acetate 1st? I`ve been able to stretch the film over some nice sized openings. Like I said, I used acetate to back the Betty`s bomb window,which.come to think of it, haven`t checked to see how it came out...just did and it`s a bit cloudier than if it was without acetate. Yours looks pretty good..may have to do one more coat to get it flush. Sometimes it takes forever for it to dry, especially if you go heavy. Looks like you went light..best way. I love this stuff!
Len