It has already been retroed but again, i think there is just too much garbage in the system. I had the compressor, drier, and the high pressure line replaced about 9 years ago, and replaced the liquid line and the orafice tube this summer. it worked "ok" for about 3 months, then crapped out again. I tried to give it a charge but it wouldn't really take any more refrigerant and doesn't get cold. Hence, i think that the orifice tube is clogged from all of the junk in the system. If i wimp out, how much do you think a shop would charge to flush and refill the system?