Cool, I've been following the PCS solution for a while.

From reading the Mercedes factory info, the 722.6 engages the shift solenoids only when a shift is requested ( it uses PWM for these solenoids as well ) and " ratchets " through the gears rather than speed 1 sol , speed 2 sol . . . or even a combo. The 1-2 shift soll is also used for the 4-5 shift from what I recall.