I purchaced repo windows fron Dynacorn. After installing new rubber in the track screwed into the roof and installing the windows, something doesn't seem right. With the window adjusted to just touch the rubber in the front and the rear corners, the middle is bowed like a finger tip too high. Should i put something between the track and roof to push it closer to the window? I put the old window up to the rubber to make sure it wasn't a repo concern and it had the same gap. The track was off when painted and am not sure if the gap was there prior to removal. I could always fill in the top gap with something like RTV. Any thoughts or help would be greatly appreciated.