2009 ktm 530exc bogging on low revs

Hey guys my ktm 530 exc is bogging out on low revs but with a good twist on the throttle it will rev out fine ,it some what feels like It doesn't get enough fuel but with out the cutting out it just won't rev out properly , starts and idles fine , should I be looking at cleaning out my fuel tank and carby or could be it something els , has new spark plug , coil and lead also.

Any advise on where to go from here would be greatly appreciated

Cheers Sam ✊

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