Ey I tried out my 2 new halos today and was wondering when you tighten the vice should your tube be moving - not sliding up n down but back and forth with the vice- example when I'm shaking it out in the wrince cup or even moving my hand fast with black and grey or even put my machine in a odd position and my tube n vice move and make a very uneasy sound- both machines do that and I never had a machine that allowed the tubes to move usually the vice locks the tube dead in place- this wiggling tube doesn't seem rite? Hope you can help me- other than that machines worked well- but that wiggle was scaring my client-