BTW, the new Slash MIP CVD's do not use a set screw. They have you put the pin through the axle/CVD as usual, and then a small plastic retainer ring screws over the pin area. You have to be careful tightening this ring cause it can strip out if over tightened. Looks good when finished. This one you posted with the plastic red retainer ring is the one's I'm refering to:
http://www.rcnitrotalk.com/mip-cvd-for-traxxas-slash/