f2,
Check with Stephen Weber @ Aeroglass. He is in Ontario and his quality is EXCELLENT.
He doesn't have a website but his phone # is:
59-875-1533. I'll bet he has a pant that will work for you. We have been using his glass for the past 5 years and it holds up very well, no cracks or breakage except for the occasional crash damage. (We also fly off grass).
Tell him we sent ya!

Steve
AMA#4939

Puckett Model Aviation