I had an old 9500i lying around so I sent it into Escort to upgrade to the 9500ix. I just got it back and I'ts having trouble locking onto GPS. I've been driving around all day with it low on the windshield with no luck. I drive a VW and I dont have any special film on my windshield. I've currently got it sitting outside my sunroof powered up for about an hour and nothing. I've tried resetting to master default settings with no luck. Any suggestions?