So over the last six months Ive gone through Quite a few liners thinking that people just cant build a solid liner that will last through a whole tattoo with out heating up and changing pitch. The only liner that hasnt done it is one that I built on eight wrap full coils. Ive had liners from several big names and all acted the same. Finally I give a liner to a coworker and no problems. I do tend to be a little OCD I obsess over keeping my machines running fairly much the same for each tattoo which for the most part is easy to do. A little tiny tune every few days on my Shaders and there back to exactly the same way every time. Ive swapped My critical for an old eikon and my Liner seems to run lot better haven't tattooed enough with it to really give a proper eval. It seems that the power supply may be the problem. Its over two years so no warranty. They have been cool and offered me a discount on a new one but I can also get a great deal on an eikons products as well through a friend. The power supply seems to run fine but Ive had probably four liners heat up and slow down after about 20 mins of solid tattooing. Any one experience anything like this and which power supply do you think makes the cleanest power.