I have been riding my '01 426 for about 5 months now and I'm still getting the occasional bursts of metal fleck in my oil. The oil doesn't smell burnt but is brownie -black with metal flake I change my oil after every two rides (about 6-8 hours in total) I also change the filter every time as well. BTW..I use Motul 300v oil (The same oil the Aussie Yamaha factory uses)$98.00 AUD for 4 litres With all this talk of gearbox problems I talked to my YAMAHA dealer and he said that he had just changed a set of third gears in a bike that had done 6 months HARD work. Does anybody else have this and do you think it is normal? Worried Blue Aussie!!