jon595, bubbagates - this ATV thing seems to be the solution, and I just basically finished duplicating that "no sub trim, high ATV" that is on the downonthedeck website.... works VERY well.... BUT...

If you're measuring REALLY closely, the travels are NOT identical for two of the three rates. I can get BOTH up and down to be VERY exactly matched, but only on ONE of the rate settings. The others are close, but very slightly off at on or the other end points.

(Head and sheetrock softening now....no hair remaining.... torch at the ready.... )