I just discovered today that someone broke one of the crankout awning windows (7”x42” approx) in the rear of the 5vr. I called the local Keystone dealer and he said I’d be better off going to a glass...
Things like that can be a little persnickety... Many of the moldings and such are designed to go in easily, but a bear to remove. Designed that way on purpose so they don't fall apart.