OK so I'm not sure when that started to happen... Maybe when I updated the firmware or imu but even though I've since then recalibrated everything on even surface the gimbal if still about 10 degrees off. Every time. Today I even manually adjusted the roll... It was fine for a bit then went back to slanted..! Could this have anything to do with not being leveled when boring the quad up? Have you experienced this? What can I do to fix this?