Hey guys, I need some advice. My 2011 Nitro's air isn't blowing cold anymore. Its blowing just not cold. I realize there must be a leak or is this normal after 3 years and almost 50k miles? From what I can tell it just needs to be recharge? I don't want to spend an arm and a leg at a shop only to be taken advantage of by a mechanic and it seems to be fairly simple to do, I just would like some feedback before I go blazing off to fix something when it may be some other issue... Thoughts? Also if so...what recharge products work the best and are the easiest to use? Thanks in advanced!