i have replaced the lps checked hps replaced the compressor (i have the accumulator and metering device but was unable to get the line set apart to install so i left the old one in) when static the low side is reading approx 100 psi (i evac'd the system vacuumed it down with a 7 CFM pump and put in 20 oz of refrigerant) the truck says 2 lbs but ive talked to multiple ppl and have seen multiple sites saying 2 lbs 12 oz heres my issue the lps keeps kicking out i feel no delta across the lines when the compressor engages the pressure immediately drops. i jumped out the lps and the low side went into a vacuum leading me to believe there is a restriction between the comp and evap or between the evap and the receiver. i am a certified commercial HVAC guy so i have a large amount of experience and im sure ive looked over everything but ive heard restrictions are less than common on 608 apps anyhelp would be nice