I have had my kegorator for several years and no issues. Suddenly a CO2 cylinder ran out in less than a week. I had it filled, reattached it to my dual regulator, and no matter what I do CO2 rushes out (very noisy) when I open the cylinder. Have checked the connection with the regulator and it seems tight and secure. I closed the shutoff value on the regulator and turned the adjusting knob to the fully counterclockwise position (zero pressure setting). This is quite frustrating - any suggestions?