I'm looking for a little guidance with carbonating my kegs. I have a keg king setup and strike difficulty when I force carbonate. The problem I have is that when I turn the gas on the gas pressure continues to rise to a point where the relief valves on the keg open. So I can't set the pressure to a particular PSI. What I'm having to do is let it get to about 30psi then turn the CO2 off, then comeback later and do the whole thing over again. Is it a setup issue, gear issue or operator issue? Any suggestions to remedy?