Thanks of the note back...here goes?

1. GPS status. You should see "Position known"
*YES! However it said “receiver error” last week!

2. GPS S/N signal strength figures. You need 12-16 on at least 3 satellites. 20 is really good, under 10 is weak
*GPS SATELLITE 05 VISIBLE 08

3. PDOP figures. PDOP of 1.0 is super accurate positioning, less than say 3 is normal. 5 to 10 is inaccurate, above 10 is really bad.
*3.8 1.7 3.4

4. Gyro - ist it at 2500 +/- 100mV when car is stable, does it go down when turning left, up when turning right?
*YES

5. Wheel pulse reading - is it 0 when still, increase with speed, and show negative when going backwards?
*YES

6. Direction indicator: should be backwards when in reverse gear, forwards all other gears.
*YES

Report your findings.
Also, state your nav software version (top right of Settings screen)
*SW 4-1/20

What do you think??