An old painter told me that a trick to improve paint around windshield is to hold the seal up with a small dowel rod then tape the seal as normal to avoid over spray.

He said that this can result in almost as good as pulling the windshield.

I just had my SD painted. The guy who installed the rear windshield used to work in CA at a dealership when these cars were new. He cleaned the glass, attached the seal,installed the chrome, lubed the seal with WD40 (from a can,not spray) & wrapped the rope.

He taped the ends of the rope to the window then set the whole thing in place. Then he easily pulled the rope in stages working the window into place.
He slapped the window to help jiggle it into place.

I wish I'd taken a video. The process was beautiful with no muss, fuss or chance of breaking. Cost $60. I paid cash of course. He does work for bodyshops and car lots.