On Sunday, August 20, 2017 at 4:18:33 AM UTC-5, Peter Whitehead wrote:
I have replaced a few Slingsby Skylark and Dart canopies.They also used countersunk flat headed screws, but into wooden frames. The trick is to drill the holes slightly oversize and bed the canopy onto a sealant which doesn't have huge and permanent bond strength. You just might want to use the frame again, as I did. Not metal tubular frame, but of similar vintage. Pete

Pete,
You are right, the Austria canopy frame is a welded up complicated item including locating pins and a plunger latch mechanism which is a Huge pain in the butt to fabricate!, The loss of which might prove itself close to impossible to replace.

Scott.