I am fairly new to kegging and just purchased a dual regulator. I hooked it up last night in my kegorator and set it at 12psi. When I woke up this morning it was at 45psi! Every time I try to set it it keeps creeping back up to 45. Am I doing something wrong or is this a broken regulator? I'm worried my beer is going to overcarb so I shut off the gas. Your help is greatly appreciated!