Thought I'd drop a tip on how I mount the Redrock Micro fingerwheel to my M5. If you simply pop off the plastic cap on the end of the carbon fiber cross tube, the jaw of the Collins clamp will fit perfectly inside the tube, positively clamping the fingerwheel in place. Very solid, very unobtrusive, and perfect alignment for your finger! FYI, the fingerwheel can be flipped 180° relative to the Collins clamp, allowing it to be mounted on either side of the gimbal (depending on your preference). Two little screws and an allen wrench and you're done.