throttle body

Hi guys, I am having ongoing issues with lack of power in the higher revs and jerky in the high revs (won't rev out) the final thing i can think of is the throttle body needs a good clean along with the injectors. I can't seem to find any guidance on the internet of how easy/hard it is to...

Dear all Is there any way could get 2011 Duke 690's throttle body? The motor of the throttle body had the issue can't work normally, I can't afford to order a new one throttle body, help~~~~~~~~~~~~~~~~~ Thank you all.