Anyone notice that their SG2100 changed its point of reference after they swung it to the extreme limits? To clarify, yesterday i set my receiver to clear limits and pressed move east. After a minute I pressed stop. Thereafter, every satellite was out by 4 nudges in 1.2. Either the motor moved on the pole, which I hope isnt the case, or the SG2100 somehow losts its point of reference, and I had to nudge it 4 clicks west for every satellite.