As the title says I have a Nav Pilot 300 with the PG700 heading sensor and a physical rudder position sensor. It worked great last season after installing it over the summer. First trip out and it has lost its calibration. When attempting to recalibrate whether for manual or auto modes, it hangs up at 50%. What are the next steps?
In the picture you can see the Suzuki SMD-9 with COG 125, the PG700 shows COG 110 and heading of 83 degrees. The SMD-9 is closest to the compass reading. This is a flat calm ocean day with almost no wind, running the autopilot on heading only. Sometimes it will hold ok, sometimes it will start to slowly turn a large circle and once a very sharp 90 turn after about a mile of straight. All this just running a heading, no waypoints.
I feel like I'm being led around by Captain Jack Sparrow's compass. Where do I go from here?

In the picture you can see the Suzuki SMD-9 with COG 125, the PG700 shows COG 110 and heading of 83 degrees. The SMD-9 is closest to the compass reading. This is a flat calm ocean day with almost no wind, running the autopilot on heading only. Sometimes it will hold ok, sometimes it will start to slowly turn a large circle and once a very sharp 90 turn after about a mile of straight. All this just running a heading, no waypoints.
I feel like I'm being led around by Captain Jack Sparrow's compass. Where do I go from here?
