This is the problem I have, when i go to line with my rotary I can't push my tube far enough without it hitting the bearing, I have tried all three size bearing that come with it. My needles don't even come out of the tip with my normal tubes. I switched to shorter tubes and the needle tips barely clear the tube. I have tattooed for 15 years with coils and never had this problem. I feel like a dunce, but what am I missing here?