It looks like it could be overcharged based on your pressures. Low side should be lower than that (around 29 psi) at 2000rpm, as should the high side (more like 180 or 190psi at 2000rpm). Idle pressures don't tell you much. If it isn't overcharged, then I would say for sure you need to replace the expansion valve. But once you have proper low side pressure, you should be getting low 40 degree vent temps.

GregS