My 2730 is on order from AutoNav (thanks James for the great price and Rick for the great technical info). I also ordered the m/c mount kit. I'm leaning toward the stem mount setup that GROO has, but is the Garmin mount a locking mount as in someone can't just come along and take the gps off the mount and walk away wth it? What is a good source for the stemmount w/ the 1.5 shaft?