It's easy to get frustrated with that stainless trim whe removing and also when installing, even with brand new clips and straight trim.
A person needs to just walk away when you start fighting it.
if it's not reaching the clip to hook and hold, it just aint gonna happen. Many times the right thing to do is scout it out before even trying to fit the stainless, clear away any obstructions that will keep the stainless from reaching the clips and make sure the clips are straight and that they are set high enough for the stainless to reach.
in my best tom hanks softball coach voice...
"Pounding?.... There's no pounding in glass work!"
I have put a few gasket style windshields in before, easiest I ever did was on my daughter's 65 mustang.
I fit the gasket to the glass first, then ran a 1/4" rope in the groove all the way around and overlapped the rope tails at thebottom center of the windshield and taped the rope tails to the inside of the glass so the rope didn't fall out while setting the glass in place.
here's my pull rope
bedding compound
They had a nice groove for the initial application of bedding compound which is recomended for this particular application.
I set the bottom edge of the gasket in place first and then leaned the glass in to rest against the window tray/opening. Then I centered the glass left and right and begain pulling the inner gasket lip into the inside of the pinch welded gasket flange. Top corners are tricky, they always are. and it goes better with 2 people, one to apply a little hand pressure outside of the car and one to pull the rope inside the car.
I know our B-Bodies are a little different than this but the basic rope trick is good if it applies.