Hey All
With having trouble with the sat nav mounted above display,have mounted my garmin zumo 550 on the left hand handle bar using the redundant mirror thread, no vibrition/bouncing not too far away very good .
The company that help me was TELFERIZER, a chap called Bob very helpfull, his contact details are 0161 476 5701,
web: telferizer.com, email : info@telferizer.com
See pictures sorry file too big. email me i will email it to you