Got the Zumo 550 - so far so good. Mounted it using Techmount chrome mount and a quick change adapter plate (this plate is a little loose - waiting to hear back from Techmount on a fix or replacement).
Ordered the right angle aux. cable as well as the screen protector.
Got to that security screw & I began wondering if the MoCo shared engineering with the folks at Garmin?

It is screwey as well as the dinky oddball screwdriver so decided to replace it. Found out the replacement thumbscrew product on the market was $9.50 decided to Redneck Engineer instead. This is what I came up with:
1 M2 screw 12 mm long
3 nuts for above
Hint: use blue locktite to better secure the 3 nuts.
Total cost: $1.20 from the local hardware store.

With a paper clip for size comparison:

Painted it black Harley Vivid Black - not very noticeable & works great:

Mounted on the bike:

Thanks to all in this thread for the
opportunity to spend even more money hints that make the Zumo more user friendly. Especially Fired00d.
