Magellan RoadMate Replacement GPS Mounting Base

The suction cup mount for my Magellan RV9165T-LM RoadMate GPS busted so I was looking for another way to mount it. I decided to model it after the dashmount for an old iQue3600 Palm Pilot / GPS. This is the result. It utilizes the original GPS mount and the attached ball-jointed arm, along with the original toothed inserts.

This is assembled like so:
bolt > mount > washer > insert > arm > insert > washer > mount > nut

Once the nut is tightened the arm is locked in position. You can then