As promised, I am reporting back to forum. Today. I put a drill bit in the orientation hole that allows you to lock in valve lever at 3 o'clock (neutral position) and adjusted height arm to meet this new range. Previously, the lever was between 3 and 4 o'clock which allowed valve to bleed off. Car is presently holding this height fine (13.25 in from center of wheel star to center of fender lip) with engine off. Hope to see this same measurement in the morning! Many thanks to all who responded!