I've been reluctant to ask, since I see the forum is littered with posts regarding CNG. I'm in Redondo Beach and bought a Catalina 30 last year in Marina Del Rey. It's fitted with a CNG stove and heater which are fantastic, but the gas finally ran out and I cannot for the life of me find a tank exchange location or service in SoCal. All the other posts about CNG seem to be east coast based. Can ANYONE point me to a tank exchange/refill service in LA? I've tried Marina Del Rey and San Pedro with no luck.