I reinstalled the quarter windows in my 69 Dart and have been trying to align them on and off for days now. I work on them for a couple of hours, get frustrated and quit till the next time I feel like trying again. I must have 10-12 hours of total time in so far on trying to align them and they are both still out of whack. Is there some quick and easy method to doing this? I have to believe they had one when installing them on the assembly line since they didn't have a lot of time in between cars.