The chain has plenty of lube ,always lubed up it has had the noise since I brought it 22000 km ago now has 63000 Kim's on the clock, doesn't make the noise in other gears and I can take of with out it making a noise if I slip (ride) the cluch,makes me wonder if it isn't a clutch shudder but there's no feeling of a shudder just the sound . I'm the 3rd owner and we are all over 50years old last owner was over 60 ,bike was bog stock and very unlikely to have been abused,any one heard maybe of the clutch basket nut coming loose???????