I bought one of these last week ive done one black and grey tattoo with it and it worked really well. I'm having an issue though I cant tell what stroke I'm at. it has 3 ticks and I used my common sense to figure out the stroke I'm at but I want to be sure. do you adjust the stroke with the allen key hole on the came facing up or down? the little manual doesn't say and this is my first direct drive. which is considered to first mark(2.5mm) ? the mark at the top when the allen key hole is facing up or when its lower by the vice.