Hi Dave,
This is not a very good picture but I think it is the same Ram mount that you mentiond. If I put the Zumo behind the speedo I use the longer 5.35 long arm. I used to have it mounted nearer the left handgrip and then I used the shortest arm. I like it behind the speedo better. I also use the same style Ram handlebar to mount a Chatterbox to the left of the Zumo (they are connected by one small cable for audio) so that I can hear the Zumo commands (and music) in my helmet. Let me know if I can answer anything else for you.
Next week I am removing the rear wheel so that I can replace the tire and rear brake pads. For anyone who has done it already is there anything out of the ordinary I should watch out for when removing the rear wheel?
Thanks,
Ken