When we check level, we put bubble level on counter near fridge. Recently put on floor & noticed a difference. Where do most people check? Counter is a lot earlier.
Simple: level up your rig, perhaps at home, the way you like it.
Then find the place that shows level, and use that spot consistently. I use a leveling app on my phone,and I know the spot on my floor to place it while I park my B in the best spot available.