So I kegged a dubbel on 5/20 and set the regulator to 30 psi at 64F. I hooked the keg to the kegerator to see how it's coming along and the only thing that came out was foam. After pouring pretty much all foam and some beer I tasted to actual beer. The actual beer was flat. What gives? Should I just leave it in the kegerator at a cooler temp to see if the beer actually carbonates? It almost has a little bit of a cidery aftertaste. Does that come into play somehow? I would really hate to dump this beer but I don't want to drink flat beer.