Hi all new to this kegging and home brew have done my first brew in the keg and when I connect the ball lock fittings on to corny keg they clip on firmly , when I went carbonate the keg it didn’t seem to do anything till I pushed down on the fitting and I could hear the gas going in and stopped when I released and also whet I went to pull a beer it came out as a dribble then I pushed on fitting and it came out good