So I have had a couple problems kegging. I have done it 3 times so far, and I can't seem to get it to carbonate. I had trouble before because one of my barbs was wrong on the keg. I changed that out, but I still seem to be having some issues. I'm kegging right now but my beer still seems to be flat the last thing I can think of is maybe because I'm using a o2 regulator body and made it so it will work on my c02 tank would this cause problems?