Guiness cleaning tank problem

[wolfkicker]

I use a stanless steel cleaning tank, 3.5 gallon I believe. The one Guiness connection is getting intermittent, slow flow or no flow when cleaning. The other three connections still work fine. Any suggestions on what to order, or adjust??? I can hear air enter the tank so.....

[spdbump]

Check the draw hose inside the tank for kinks.

[wolfkicker]

Feed lines inside the tank are fine. If I rotate the Guinness coupler 180 degrees sometimes it'll feed properly, or, if I swap 180 defrees it'll work on the 3rd of 4th try. I still suspect something it the tank connector....