Just moved my English Brown Ale to secondary this morning. FG 1.008 and it tastes great! I will be carbonating in a corny keg for the first time and have a question: After the beer is carbonated completely, can the keg be stored unhooked from the CO2 (obviously, I would keep it pressurized)? If so, does it have to be kept cold? Or regularly checked to see if the pressure holds even if the keg showed no leaks after filling?