Hey folks, I've got a question regarding the rear window repair. I've read the "excellent" guide on re-gluing the window, but I'm curious as to the folded over part of the canvas. On mine, the folded part is loose. Should that be glued down tight first? Or leave it loose and the glue will soak through?

It just seems like it won't hold the window tight if that flap is loose.

Thanks in advance for any advice.