I'd like some help with triage from some more experienced keggers.
I seem to have a C02 leak in my setup (brand new kegs and C02 tank from OBK). I filled the C02 August 14th, and by the 20th, it was completely empty. I've now added the little grey washer between the tank and the regulator, and I'm not sure if that sealed the leak, or if that is where the leak is coming from. I filled the tank again yesterday and the tank went from 700psi down to 500 in the first few hours, and is holding steady there.
Is there anywhere else it may be leaking? How can I find and stop the leak?