WOW! I never would have guessed there were so many different types and styles of vents! Thanks Phil. Do you use one on your bike? Maybe the glazeing of the valves and seats is not an issue with the Triumphs. A few drops of oil at the end of a days run doesn't bother me and I could'nt justify the cost just to keep my garage floor clean. Now, if I could park it in my liveing room like I wanted to...