I still think the swashplate isn't level because those are all the symptoms of one. It doesn't take much movement in the swashplate to cause a change in how the helicopter flies. Try shortening the back right servo pushrod a half a turn or a full one and see how that goes because it sounds like the front of the swash is tilting down and left. For the rotating try turning the propotional potentiometer clockwise a little at a time on the 3in1. It doesn't take much of the potentiometer to affect the rudder.

Nick