POA was defective - all good now after replacement!

Thanks, I'll gives those ideas a try.

I have a 1970 Olds 442 and as I went through the process of rehabbing her I bought all new/rebuilt AC parts - Parallel Flow Condenser, Drier, AC Box with Expansion Valve, POA Valve, Evaporator, and blower. I also has the POA valve set up for R134a, the A6 compressor was rebuilt and filled with 10.5 ...