Randy Mosher writes in Mastering Homebrew: "Some tap heads have an adjustment that helps vary flow, and this helps with fine-tuning. But there’s no substitute for a well-balanced system. Another neat trick is to use one or two plastic epoxy mixer tubes, shoved in the liquid dip tube of the keg. These are basically dual spiral tracks that provide a lot of back pressure to give you a good amount of restriction in a compact form, perhaps 6 psi/0.41 bar per 6-inch/15-cm mixer. They are available cheap from industrial suppliers like McMaster-Carr (part number 74695A58)."
I have this kind of tap with an adjustment, and with my latest IPA I get too much foam. Has anyone tried 74695A58? Does it work? Anything else I could put in the dip tube (as I live in Europe) to reduce the foaming?