I'm doing a Frigidaire 7.2 cf keezer conversion like the one Quaffer did and also featured in BYO, but I cannot locate 3" shanks in SS with a 3/16" bore. I see a lot of them are 1/4", but my lines are 3/16". I read somewhere that they should match or I'll get foaming if I go from 3/16" line to 1/4" bore shank. What's the deal? Can I use either bore without issue? I also saw some in chrome plated brass in 3/16", but I really want to stick with SS.