I made a Porter back on 28 Aug and kegged it on 17 September. It's been on Co2 since 18 Sep and I've been tasting it a little here and there and it tastes alright, but it seems not to have much body/mouthfeel to it...maybe a bit watery. Will it fill out in time or does it sound like I did something wrong? I have the CO2 set at 16 PSI for 58 degrees which is what I read in a book.