My unit worked well with no problems since new [ 9 months ] Previously the 66SR started up and acquired satellites when the multi band was turned on . Now unfortunately it only acquires satellites when started up on GPS mode only with multi band in the off position. I can still get full satellite coverage if i go into the satellite settings once I have the GPS locked on and change the settings to multi band. Its a minor inconvenience but an annoying one. I have contacted Garmin about this and was told they were working on a fix for this issue. anyone one else got this problem ?