My 2010 was a real hummer too. Not so much finger tips but definitely through the pegs.
Double check the head stays, they are known to crack.
Although you have checked the engine mounts go back over them. Loosen em off and work from the swingarm back forward finishing with the head stays. While they are slack compare the frame to the mounts. Some people have found less vibrations if shimming the chassis up a little too.
Usually it's the 300's that buzz more so than the 250's.
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