started to notice the bike was not revving too cleanly and struggles between 9-12k allthough it will do it and was feeling a little restricted on a recent ride out, i had a base gasket leak so initially put it down to that but after having the barrels off and replacing the base gaskets the hesitation remains.

checked the pv's and adjustment and all is fine, servo does cycles to full open, recent full rebuild and everthing looks good, the bike does feel like it wants to go but is being strangled. Plugs are ok, fuels good.

bike was performing fine on dyno recently and prob just seems to of crept up,

could it be blocked power jet/s?, i will of course check but just wanted a few other ideas.

further suggestions geatefully recieved