The last couple of times I've taken my P2V+ out, the GPS seems to take forever to get a lock. It's gotten to the point that I take off and hover at 20-30 feet. Initially I'll have zero sats. After a minute or two it'll go to 5. But w/o 6, there's no lock, and it'll just slide around everywhere. If I'm lucky, it'll pop to 6 or maybe 8, but as I'm flying, it'll regularly drop back to 5 (red). It's entirely stock, never crashed, never been wet. It's been at least 6 months since I last had it connected to a PC for any kind of updates - and was working find after doing so. I've recalibrated the compass after moving between TN and FL on a couple of trips, but still, same results. I've never opened the shell, but and thinking maybe I should to see if something has come loose?