Ok, this ones been a weird one.Its a medium Temp r22 system. I have a Kramer Condensing Unit with a 4dr3r28-mo (189000 BTU) Copeland Compressor. It has 6 evaporators 31000 BTU each(low profile). It will not come down to temp. We found that 2 of the evaporators were just rotted out so we changed those. Also had one with a TXV Bad (No superheat) Had a few fans out but not enough to do what this ones doing. On the ones we just installed the brand new TXV's (SBFVE-b-c) are doing the exact same thing. Superheat is about 45 on both of them and will not adjust down any. On one we replaced the orifice in the distributor nozzle from a 2 to a 2 1/2 (both inside the guidelines of the manufacture). This changed nothing. The Room will get down to about 58 at night and today while I got these numbers it was around 62. Ok....The Compressor superheat was 45. The subcooling was 8. The sight glass at the receiver was cleared. Low psi was 42 and the high was 245 psi (90+ ambient). Superheat on other evaps were all good (12-15 range) the discharge line was around 90. Oil pressure is about 55. Discharge Temp is about 225. We changed the driers twice just too make sure. This is a cut room at a meat processing plant and there are about 40 people in it at one time. They wont shut down the room where we can get in there but only an hour or so at a time. We installed the evaps on the weekend but it was lucky because usually they work even on those days as well. Im lost and dont know what else to do. I know Im missing something and its probably simple but Im either to frustrated to see it or Im overlooking it. Any help would be appreciated.