Thanks guys,
I think its more than likely the idle jet, and / or the air filter as its never really been changed or cleaned for that.
I know, I know shameful behavour but you know how it is.
It definately not the power valves, it just not that kind of boggy. As soon as it clears then theres power low down. they where only changed about 3 /4 months ago.
I think a stripe and service is just the order of the day but i had to ask as most other bikes Ive had, usually have major problems when things start going down hill. must say though Im well impressed with the bulletproffness of this bike.
Buy on now.