[johnkosir]

Any good AC or Refrigeration mechanic should be able to do it Solder might work, but silfos would be ALOT better, A map gas, maybe even a propane torch would do it, I prefer oxy acetylene, for the small concentrated flame, It should have a vacuum pulled on it, 22 is expensive but you don't need much, you can also use R422 which is a lot cheaper and is a drop in you don't have to change the oil.