So I just purchased a 2010 JKU, love it! However I’m in Phoenix and it is absolutely scorching out right now. The AC is basically worthless unless the engine is over 2500rpm, when idling or driving on the street it’s basically just a fan. I checked the R134 pressure and it’s dead smack in the middle of the green. I could fill it a bit more, but don’t want to damage anything. Is this just a Jeep thing, or is there something wrong?