Replacement Chudnow Regulator Cartridge and Diaphram - Rebuild Kit
Rebuild kit for Chudnow Regulator. These replacement parts Include a diaphragm and cartridge for complete regulator overhaul.
This will eliminate air seeping from the weep hole and pressure creep up (as indicated on your low pressure gauge). Replacing these two items should fix virtually any issue with a Chudnow regulator.