Originally Posted by Mdowling56
I know i'm prob going to have to take the fitting / dip-tube out but with 5 gallons of beer in it i'm not all that jazzed to do that.
Yep. Take it off of the gas, and purge the keg first. Then remove the "out" post and pull out the poppit and diptube. Hold the diptube up to the light and see if you can see daylight through it. If not, you found your problem! Rinse with hot water, resanitize, and put it all back. Rinse the poppit, too, and resanitize.
Do you have another black quick disconnect for the "out" post? Just in case it's the quick disconnect?