Freezing starts at TXV and continues to the evap coil. 404ALow side is 43.2. High side is 323. SH is 20SC is -45. 5.12 amps on run wire from compressor. Do you think I have a restriction in the TXV or am I low on 404?I have evacuated this thing twice and put in 64oz as specs say. It ran fine for about 3 weeks then started freezing up. Any help is greatly appropriated. Thanks