About 2 years ago I did the r134a conversion kit from late model resto. For almost 2 years it blew ice cold with no issues. I didn't run my car for about 2 months due rain every day so it just sat in my garage. I recently went out to start it up, turned the a/c on and its now blowing hot air. I don't have a set manifold gauges at home but I visually inspected the entire system, check all fitting and lines. Nothing seems to be out of order, no visual leaks. Anyone else done this conversion kit and had this happen? Or know any common areas that leak in these systems? The entire system in brand new, been ran maybe 10 -15 times since I don't drive my car that often. Any info would be much appreciated, its hot as hell down here in south florida. Thanks!