I just got an Old-Timer rotary for Christmas from my loving gf, and just used it for the first time today. What I was wondering is what speed to run it at. I was packing color at about 6volts and it seemed to work ok but I had to move extra slow. I'm more into traditional tattooing and hear that they are great for whipshading, so I was wanting some tips on whipping with it. Volts, hand speed, etc. Any help is much appreciated!