I am having a problem the way the side glass fits at the rear top with the quarter glass on my 69 Mach 1 build. With the glass adjusted so it fits perfect with the weather strip, there is almost a quarter inch gap where the top rear 3 inches of the side glass sticks out too far compared to the quarter glass. Both driver and passenger sides have the same issue. Everything is new reproduction 1970 bolt in glass, regulators, brackets, etc. including the doors. The vertical glass runs are adjusted all the way out. It seems like the glass of either the quarter window or side glass are not shaped right with the correct curvature. I have the same issue with a 69 I restored about 8 years ago but just lived with it.