I am having this problem as well....however, resetting the home position using the above steps does not work. I have disabled the encoders in EQMOD but that does not help. The scope is slewing to parts of the sky no where near the selected RA/DEC address used in Sequence Generator Pro. I tried the hand set this afternoon and after resetting the home position and disabling the aux decoders IN THE HANDSET - the mount behaved as it should. I disconnected the handset tonight and using SGP to slew to my target - it was back to it's same behavior....when parking the scope - DEC is right but RA returns to a 20 degree error off.
I also reset the home position after I disconnected the handset and reconnected the mount via EQASCOM.