The gasket & lockstrip should be hot in the sun. The lockstrip should be installed in a rolling action. You should be able to bend it over backwards, insert into the channel of the gasket, and roll it in at the point it is curved, should then roll & wiggle as you go throught the length.
I know it sounds funny but I didn't know how to put it. You start in the middle of the bottom and work your way around making sure to work in the corners good. Trim to max at bottom (smallest gap possible between ends) The clip will snap on the gap at bottom.
You do not put black sealer in the lock strip channel. A little goes in the glass chanel before putting on glass. The factory only put it there and on along the bottom where the gasket/WS sets on the fence stops. I have on my 64 had to go back and move the gasket etc further into the corners and had to run black sealant between body and gasket after install. The glass co. only ran the sealant around the bottom and half way up the sides. Had leaks so I bought 2 tubes of black sealant from NAPA and went on around the outside between gasket and body, but not so much it comes over to fill gap between gasket and body. You want some gap between window opening and gasket. The sealer would be applied under the flap of the gasket where the gasket and the body "fence" meet.
Hope this helps good luck!
