Wow, that's a hell of a
manual ya got for that motor!
(that's just the first link Google came up with...)
Which LNB input on the built-in switch are you selecting?
(nice trick, putting a 2-input LNB switch on the motor)
The motor will offset 6º from wherever you say, if the alternate LNB is chosen.
Otherwise, I direct your attention to
Page 9, R) Troubleshooting.
That's about all I could come up with.
After skimming the manual, I will seriously consider one of
those for my next system.