Over my head…

“How did you determined the amount of pull you used when cinching down the area of the qtr glass to the top deck area? And was the top warmed up sun wise? Just curious.... Top header loose when stretching?“

I started by measuring old top and making marks with a blue tape where it sat and how far it went. I don’t think I would’ve tried if I only had a frame to start with… probably would still …
when I did quarter panel attachments and back stretching I had small cardboard box between windshield and front bow propping up about 3 inches