There could be something to what you're saying. I did notice that additionally, the new glass doesn't line up exactly with the "aged in" line of the original glass in the weatherstripping. Still, when closing the window with the door open and then shutting the door, the new glass overlaps the weatherstripping just fine. If you close the window with the door closed, it doesn't close as far, and when you then open the door, you can still close the glass a little further. Probably this will be a non-issue with new soft weatherstripping.