I have attached a picture of what i was told would be a good way to fill growlers/bottles. It is a piece of 7/16" vinyl tubing that fits snugly inside my Perlick 525PC taps. I attempted to fill a 12 oz bottle with it. Into a glass without the tube, this particular tap pours wonderfully with the perfect amount of head. Into a bottle through the tube it pours terribly with tons of head. What am I doing wrong?