Windshield and rear glass question

Meant to ask you before......what did you do about the screw holes for the clips? Did the urethane seal them or did you weld them before doing the windshield and rear window?
I don't know about "bwillaub" but my car the original rear glass gutter didn't have screws, it had little studs welded to the gutter. I had to grind them off before sealing with undercoat. If you have screw holes I would install short screws (with undercoat on the threads) then seal everything again. Treblig