its all in the balls
Dickie,
the clues help.. so look at RAM-B-149ZA (short arm u-bolt mount) with RAP-319 , get a rubber strip, thumb width wide and 2 to 3" long and wrap around oval rail above clocks, and attach on LHS of clocks. The diamond base on the mount will locate onto the underside of the TT cradle (remove clamp clips) and re-use screws. A power lead for 2610 (if needed) is Garmin 010-10495-02
If at later date you use a RAM GA9 cradle , then same kit and diamond base if you venture for a Garmin cradle, then replace diamond base with either RAM-B-202 or newer and better option is RAM-B-347.