Issues with ST70 AP

[dhays]

I recently bought a 2010 powerboat with a Raymarine package that in general is very nice. I have noticed two problems however with the AP ever since I took possession.

1. When using the track function, the AP makes very wide excursions before settling down on a heading. Once it does settle down, it performs great. This makes the track function unsafe to initiate if in any type of restricted waterway or near shore. My prior RM AP (ST8001) on my sailboat never had this problem. I have tried adjusting sensitivity which has no effect on this behavior.

2. The ST70 will only display Magnetic heading. I have changed the units to "True" on the ST70 but it still only display magnetic.

Any help or ideas would be appreciated.