Removed all of the old refrigerant from the system, along with the old filter drier and TXV. Installed new TXV and filter drier and checked for leaks with a 300 PSI nitrogen charge. I found no leaks, then I vacuumed the system under 500 microns. I then weighed in a factory charge of 16 pounds of R-410A. The system is now cooling properly. Bainbridge GA