I was wondering if it mattered If I went with a screen width of 78 instead of 80 would it matter with PQ? Also then I suppose I would make the width 44 inches instead of 45. The reason I'm doing this is because of the limited tools I have at my disposal. I'm making the frame out of PVC and using Plastex for the screen itself. I hope it will work and I'm worried somewhat about wrinkles in the sheet which I hope I can fix by pulling the material tightly on the frame. I assume this will also add support for the frame by having the sheet attached. Any help would be appreciated.