RE: setting cg
I have the GP CG machine. great, but over priced for what is it, really. Worried about it falling / tipping over..
I then made one by drillign two holes in my workbench. Got two 1/4" dowels, and added pencil erasers to the ends. Voila! A bench mounted balancer..
I then discovered the "Vanessa rig", and haven't looked back! (Les' post) Axial and some slight lateral balancing. Made one the for club! (But I gotta remember to bring it with me!!) There is [was?] a thread on RCU of the vanessa rig.