hey I'm a new user, found the forums while trying to find an answer for my problem. I purchased a set of Mastercool digital gauges about 6 mos ago from AirCold (now closed here in Boise), have had to exchange them 3 times for the high side not responding to any pressure input. I have had no luck trying to reach their support people. I am frustrated as hell, paid $400 for these things and they are crap. Can ayone point me in the right direction?