I did do the prefit,even cut the 3/16 blocking. It didn't look that far off,I thought that fat weatherstriping would cover it up, can't really send it back. I'll come up with something.
On a lighter note, every time my wife walk's into the shop and I'm working on the '56 she calls "shotgun", she helped me with the windshield and now she doesn't want shotgun..."I'll get all wet!"