It's patience technique, muscle and even pressure from helpers. A Clothesline rope, a spray bottle with a soapy solution and whatever other slippery stuff will help. I can't remember if the curved back windows are better installed from the inside or outside of the cab. Anyone have an opinion on this ?
Good luck, you'll get it,
Hank (is that the "nervous" icon ?)
P.S. $125 per piece is way over the top in my opinion. $125 iwill pay for at least 2 pieces of any of the flat glass to be duplicated maybe 4 pairs of wing windows ? I could see both curved windows for $125.