Need a little advice, Windshield

[red71cheyenne]

A little background, I bought a new windshield from Pilkington a couple of years ago and tried to install it myself and just couldn't get it to go in. Finally broke down and took it to a glass shop for them to install and they can't get it to go in either!! They shaved a 1/4 inch off the top and still no joy. They even ordered in a new one just to compare and they are identical.
The top of the glass just won't sit down in the groove once you pull the gasket into where its supposed to be inside.

I'm thinking that when I rebuilt the frame, I tweaked it a little bit and its a touch smaller than original, or I got the angles off a little bit.

I think that if I remove it, its just sitting in there loose right now, and try to work the lip forward a bit with channel locks, pliers, whatnot, it will eventually fall into place. I'll just be real careful not to warp it too much.

Sorry for the long post, just looking to see if anyone else had had an issue like this before or if there was something else you thought I should try first.