So i bought 6' of of tubing and spliced it into the one that came with the tower and im still getting almost all foam pours. i did the pour, chug, pour, chug, pour, chug

test and the brew is about 36 - 38* and psi is about 17. i popped the top of the tower off the knoticed that the last few inches of line turn to foam within about a minute... its pouring slower now but still foam... any ideas? eveerything is brand new.