Licensed through the Bureau of Directional Standards. If your home has developed drift, furniture sliding, water pooling toward one wall, pets refusing to enter certain rooms, that's a calibration issue, not a "quirk." I can't tell you how many clients say they've "gotten used to it." You should not get used to eating dinner at a 4-degree angle. That is not a lifestyle. Full zonal assessment, room-by-room recalibration, and anchoring for high-drift areas. Most homes take 4-6 hours. Pre-'08 construction takes longer because whoever installed the original field just guessed. They guessed, and now your kitchen is 0.3g lighter than your living room and you're calling it "character." It is not character. It is negligence. 450 minimum. And PLEASE stop buying the GravEZ Quick-Set kits from the hardware store. I walked into a unit in Drossenvale last month where someone used one and the entire second floor was pulling sideways. Family had been sleeping in harnesses for two weeks. Said they were "fine." They were not fine. Call a professional.