The other day (May 12) my p2v+ had problems maintaining 6 GPS SATs. I waited longer then the usual time before takeoff. It would have between 6 and 5 sat once in the air, and as expected, go in and out of GPS mode. I took it up little higher above the house and trees in the hope it would get more GPS SATs. It acted the same. The next day it had no problems getting up to 10 GPS SATs. Has anyone else experience this? I wonder why this happened?