no high pressure rv2 help!

Are you checking pressure at the compressor? At the filter/dryer? At the condenser inlet? Outlet? If you are not checking at the compressor, you may have a restricted/plugged high side line, filter/dryer, condenser. I ask because with it overcharged you should be getting much higher pressures when equalized. If you are checking after the condenser there is plenty of room to fill with liquid refrigerant to hide all that, however the pressure will be dangerously high. Running it with the safety controls bypassed could lead to a catastrophic failure including damage to the car and to you! Be safe! If the high side drops when the compressor kicks on you have a restriction between the compressor and the high side service port!

Nuttyprof