Replacement Windshield gasket - Any good?

I use charcoal lighter fluid, a plastic tent stake , and lots of old rags to clean the original gaskets for reuse.The stake has a V bose and a T profile. The profile serves as flutes for the gunk. Final cleaning with GoJo cream hand cleaner and rinse. It takes 4 to 6 hours to go all the way around one. I'm making 15 or more per hour and I know it will fit.
Majority of the poor fit issues I've read about were for Dusters.