At this point my thoguht is to back up, rewind, and take things step by step. line by line. Theres some other variables at play here, and id venture a guess that nobody really understand what they are or do. If you do, please say so.
Most notable changes is they made the min/max height alot higher. We also know if you raise the minHeight past 8.3 or so, air contacts cease to be. I have to wonder whats the min/max sensor height do?