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[Wheaters]

"I agree with Dave p. On a carburetted bike, that would be a classic symptom of running way too rich at full throttle, you'd drop the main jet size. However, yours is fuel injected. So symptoms are consistant with the same issue but perhaps with a different cause/solution."

Unless, like I found via a plug chop, that the plug centre was bone white and it's actually running weak due to fuel starvation....

[Charlie bob]

That's interesting about being overhear l think these euro4 have 18 tooth or could it be silences the dealer has dinostic gear it shows no faults as does the mil light on bike may be it is what it is but dealer says will keep trying to sort it until warranty runs out in July 2019 cheers all