Hi I am working on my 77 CB400/4 I am doing ok with it I need help When refitting the exhaust to bike i Found ths the Lip on the engine side of down tube that pushes against ecxhaust gasket was missing from No,1 cyl.does anyone have one lying around or know of any out there or any ideas how
to overcome it.The exhaust is a Honda exhaust. :lbhbh: