Finally had an opportunity to re-measure my psi.

System off: Low 25psi, High 40psi
System running: Lop 0 psi, High 60 psi.

I am guessing that means I am low on refrigerant and that the compressor is working. Also, I am guessing, that since I re-built the system last year with all new parts and filled the system, that I have a leak somewhere and that will need to be addressed.

Please confirm, clear-up and/or advise.

Thanks
Doug