I cant seem to get the plane to descend with AP on at all. Climb works fine and as described in the manual, but when I go to descend, lower the altitude selector, and press ATT, the only thing that happens is that it resets the altitude selector to my current altitude? I've also tried turning AP off, starting the descent, then pressing ATT and turning it back on, but it seems to do the same thing, resetting the preselector to the altitude I was already at. In the C414, I have to deactivate ALT mode manually before starting a descent, and I was hoping the same thing would work here, but clicking on ALT does not turn it off.