Here is the flow chart, from my VN750 service manual, which concerns valve-train noise. If you need any further information, please e-mail me. J.R. Allas - mailto:jrallas@juno.com - New Lenox, IL 1990 KAWASAKI Vulcan - VN750-A6 - VROC #1585 http:www.sltsystems.com/vroc/member/vroc1585.htm So many miles of pavement - So little time...