Hey what's up everyone? Well I think I figured out the fluctuation problem with the neuma hybrids. So first of all when checking out your machines always have them set up as if you were getting ready to tattoo. This way you see the trueness of how your machine runs. I think it really doesn't matter what oil you use. The problem is when you run your nuema the force of the incoming air tweaks the impeller (take your neuma apart and look on the inside the main frame where the bottom of the impeller sits and you will most likely see a wear spot). The wear spot is because there must be and uneven force from the air and causing it to rub that area. Now if your impeller is rubbing and building up friction it will fluctuate. You may have noticed that when you shake your machine you can hear the amount of play around the impeller. The more paly, the more room for fluctuation to occur. So I stumbled across a way to resolve this problem. Its way easier then changing a million types of oil or anything else. For instance, for those who use electircal modules may notice that there is far less or no fluctuation (for me at least). This may be because the magnets inside the module pulls the impeller back and freeing up anything that may rub and keeps an even force on the impeller so it doesn't tweak and rub that wear spot. So take that concept to your air powered nuema. To make your air powered neuma run as consistent as the module you need that pulling force on the impeller to keep it in the "free zone". So i found a small piece of metal (in this case it was a piece of a razor blade) and glued it to the lower section of the back cover no higher then the rubber band. This area is the best because it is directly lever with the impeller magnets. In a sense it acts as a stabilizer and it applys a equal and opposite force to counter the air pressure on the impeller hence untweaking the impeller because its attracted to the metal. With me so far? So basically now you have air pressure pushing down and a metal that attracts the impeller back so it doesn't have the room to wobble and fluctuate. You can test this by running your machine and holding a piece of metal in the "sweet spot" (between the screws and no lower then the crack and no higher then the rubber band) and watch the armeture bar. See f the tracers are smooth (note: If you move you hand around and the metal doesn't stay in the sweet spot it will fluctuate and too much metal can stop the machine). I will post some pictures on my profile so you can see what Im talking about a little easier. It works for me so I hope it does for you. If you should have any questions give me a call at the shop (Saints Ink) and i'll talk with you about it. Thanks and luck. 435-628-2947 late