I remember the Vex encoders not being quad-output, so you can't have the "phase A plugged into dig-01 and phase B plugged into dig-02" problem. Hm.
Just out of curiosity, especially if you're using tank drive, what is the purpose of putting an encoder on the front and rear wheels of the same side of the robot? Shouldn't those wheels turn the same amount anyway?
I guess it wouldn't be a bad idea to say exactly what you have plugged in exactly where. That seems to be the starting point for a lot of these questions
