EV-1 with es98 only (no p70 or ACU) - Linearization?

[JBuss]

I needed a magnetic compass sensor for my es98 and Quantum system, so that I can use radar overlay on chart and MARPA. Therefore, I installed an EV-1.

The EV-1 works, but it's heading is between 6 and 10 degrees off compared to a stable COG.

While doing research I've learned that the EV-1 should do a linearization automatically. So I did some circles with about six knots speed and the HDG improves by some degrees, but is still between 4 and 8 degrees off.

My questions:

1. Is there any way I can see if the EV-1 is "learning", that means in linearization mode?

2. Is there any way I can force the EV-1 to do a linearization using only an es98 MFD?

3. How can I see which deviation the EV-1 has determined using the es98 MFD?

Thanks!