OK so I installed my M20x yesterday, and I think I did a pretty good job. My only concern is: how "level" is "level?" I had to use molding tape since there was no real room for the brackets. The tape is very strong, but it's not really easy to adjust the elevation angle. First of all, it's really hard to find a flat surface for my car to sit on. Everything has a slight grade around here. I can basically get the bubble in between the two center lines, but it "leans" a little bit, indicating it's pointing very slightly up or down at different times.
Am I worrying too much, or am I doing something wrong? Thanks for any help.