can anybody help or advise,my gpz500s('94 on L reg)has an annoying rattle at idle/overrun which is down to the cam chain tensioner not doing its job..short of paying a fortune for a new genuine one,does anyone know of a suitable replacement i.e. from a different engine/manufacturer..my original is of the corkscrew variety,i would like to fit a ratchet type..would a manual adjuster work or is auto better..could i convert my existing adjuster to manual?..any help would be much appreciated :-/