During my new years party, the screw on my regulator decided to not want to move anymore. I tried to force it...even with a pair of vice grips, but it would not budge, so now my kegs are just sitting there with whatever pressure was on them in the first place. Hopefully they will exchange it for me. Anyone else ever have this happen? Will I end up with flat beer since there was only 5psi on them when this happened?