My compass in the rear view mirror blinks quite a bit. It might blink once every few seconds, or go for 10 minutes without blinking a once. I took the car into the shop for some other issues that got fixed and I told them about the compass. They were able to see it do the blinking and found it needed reconfigured to our current zone. After they did that they watched for a while and never saw it blink. I was about 10 minutes off the lot and it started up again as normal. Anyone else having this issue?