I'm looking to replace the fuel tank vent line to the header tank in my old kit but the many different varieties of Tygon tubing are confusing. From my research it's clear that the Tygon brand vinyl tubing is superior to the clear vinyl tubing one can buy at most hardware stores. Although I'll probably buy this tube from Kitfox, I'd like to better understand what is the preferred tubing material. What is the preferred version of tubing for fuel vents?