eighty bucks an hour labour and about 45% profit on new spare part price.. she'd be a sweet lark alright.. park ya bike and it revs it's guts out just before you switch off? Simple sticking throttle cable or shagged carb boots/starved fuel, nothing to do with gearbox there matey...
Only bugger-all milage and oil-rings rooted? Sounds missing-info from owner and generally dodgy all-round to me...
Actually ride the damn thing big revs full throttle and do a proper long run and
blow-cobwebs-out with a good-ole creaking-hot engine blast would be my
suggested fix for that one..lol