LMichaels
TVWBB 2-Star Olympian
A humming regulator is nothing to worry about. It will come and go depending on how much humidity there is and ambient temps. The regulator you bought is NOT meant for grills. It is meant for high output devices. So you now saw the evidence of not knowing the way around gas and how it is handled. Please be careful as you are literally playing with fire. Your regulator should be an 11"WC non adjustable regulator