If anyone needs to contact me, please just look me up on Facebook. I rarely check my emails and I have a hard time navigating through this site and don't want to offend anyone if they don't hear back from me. I want people to be happy with whatever they have that I built so I will do my best to make that happen. I understand there's no machine that's for everyone and nearly any machine made will or could, at some point, make someone unhappy. This is because we all tattoo differently using different techniques. As for the retainer screws being tight. I started using a little thread lock on the screw to prevent wear when using the machine on a daily basis. Over time aluminum can wear down some and I don't want the screw to become a problem. If it bothers anyone who has one these machines I will change it for you. Also, I commonly set the tube hole about 1mm higher than the armature. This is so once you load the machine and tighten down the needle retainer, the tension will now make it so the needle bar is running right down the middle of the tube. If you line the vice hole up perfectly with the armature from the get go, then once you apply tension to the needle bar, it will cause the needle bar to run below the center point of the tube. This can cause the tip of the needle on small liners and mags to bow upward. My alignment technique resolves that issue. Hope this helps clear up any issues people may think there is with the machine.