I just had concrete poured in my garage and the floor is 3" higher than what I had planned due to drainage issues and grading. It's framed based on an 8' high door. I've got a good 2+ feet over the door opening for track, etc, so I'm not worried about needing a low-profile track, or running out of space overhead.
I'm just wondering, should I worry about being 3" off on the door height or can a standard 8' door work with a 7'9" opening?
I'm just wondering, should I worry about being 3" off on the door height or can a standard 8' door work with a 7'9" opening?

