This evening I connected my new to me LVB tracker to the G-5500 control box (also new to me) for the first time..all seems well except that the azimuth reading between the G-5500 control & the LVB tracker are 255° apart. I know the array is pointed west, the G-5500 box indicates west, but for a reason I'm not aware of presently the LVB Tracker shows +15°. 

Any thoughts?