Thanks Dave, and nice job.
This may be a flaw in my design but make sure that the cleaning solution is actually making it up the beer-out dip tube. The short tube on the gas-in side offers so much less resistance that, at least in my implementation, I had to put a 1 inch piece of 1/4 inch OD tubing inside the 1/4 inch ID tubing on the gas side for more resistance.
Tasty


