My boat icon is 90 degrees offset from the direction I am moving. I have a Garmin 7612 that is not tied to my older autopilot. I only say that because I have searched the web for a cure and I've seen many referencing to recalibration of the fluxgate compass. I spent a number of hours playing with it last night with my manual with no luck. The only device on the same backbone is an Airmar Weather Station. My next move is to update the software. Has anyone seen this before and can offer a suggestion?