I’m throwing this out there, as a handful of us here (and more on other boards) have had problems with Perlick faucets not aligning correctly with the shanks. Basically, the problem is the teeth don’t align, so you don’t get a good seal and wind up spraying beer all over creation. The remedies usually advised are to take a dremel-type tool and grind down the teeth, or to stick with conventional faucets.
But I recently just discovered through experimentation that for me the solution was getting rid of my standard chrome-plated shanks and getting stainless steel ones. Now the faucet and shank mesh like they are supposed to. I’m willing to bet everyone who has had this problem has chrome shanks (which are generally the standard unless you pay extra to upgrade).
Hopefully this information helps somebody else, as searching the internet produces a lot of complaints about the problem but no real solutions.