Help installing large rollup doors. Geometry math question

[Codyboy]

Yep I'm rolling my own. lol
I have installed two 14x14 and a 12x14 so far and have one more 12x14 to go.
I'm having an issue where the door is all the way down it wants to track to the right and rub the guide rail(looking at it inside the building). When the door is rolled up there is equal clearance on both sides of about 3/4" so it is centered.
I used a water level to mark the guide rails and measured from the hanging bracket to my marks . I think I may still be an 1/8" high on the left side.
Is that 1/8" over 12 ft wide causing the issue or could it be something else?
So trying to do the math 8/12 is 2/3" but it is 14ft high so is it 8/14 ? which would give me a little over 9/16" could be a little more.

Any ideas if 1/8" to possibly 3/16" out of level would cause that?

ETA title change as I don't need install help just math. lol

 

[bluedog225]

I think so. When I installed my 10 foot wide, fake big *** fan, having that box the tiniest bit out of level really skewed the end of the blade. It’s just geometry, but I haven’t bothered to go figure it out. I’d use a laser level. Get it balls on accurate. I suspect the problem will go away. Hopefully you have enough in your screw holes to make it work.