> Richard Jones just had this issue w/ his new OEM Westfalia poptop-
> Richard has yours stretched any since installation last Spring?

Last March, Bob Stevens helped me install a new 3-window canvas
from Bus Depot--the gray "genuine Westfalia German-made replacement."

It was very tight, taking some effort to "pop" the struts to
vertical.  Part of the tightness is due to us, part to the new
canvas.  I don't think it has stretched much since installation.
I have not tried soaking it with a hose while open and letting
it dry.

I am very pleased with it and would pick that replacement
canvas again.  It is a darker gray--maybe the original was very
faded--but I like that.  The last pix on
http://jones.colorado.edu/MoabApril09/seven.html
shows it.

Richard