first thing is find a LEVEL surface and recalibrate. if that didnt do it re-load any firmware and re-try the calibration. if that doesnt work then its time to open it up. check for loose or damaged cables first.
While we are on the subject of scaring everyone into compliance, you left out the additional criminal sentences of 3 years in prison for lack of RID, in addition to a $250,000 fine, for willful noncompliance! Also, the $28,000 is actually only...