Yes put oil in it lol the oil I took out seemed to be quite thick tho? Would this have dampened the sound to some extent? And what oil would you suggest to put in? The noise seems to be coming from in front of the clutch around the primary drive gear? Have had the clutch case off twice now double checked everything, crank, bottom end and top end bearings all feel solid too, this has baffled me??? It really is quite a noticeable knock/rattle sound unless clutch is in? I have read about the 01 onwards clutch baskets being dampened? Is this clutch basket comparable with mine and do u think it would make a difference? Thanks for the replys guys.