Advantages/Disadvanteges to Venting Rotary Valves

[Tubaryan12]

and maybe you haven't used one of the valves in a while. Then you press it and you get a little fart sound and maybe even a breeze back at you through the leadpipe.

you nailed it. It's one of those things I've been thinking about getting done when I finally get around to having some work done on this thing....that and adding a bunch of spit valves.