Brakin down in the midrange

[gooblio]

Well it's my first Yamaha 97 SXVmax, and it goes ok but it seems to sputter in the mid range. Tried a new set of plugs and the gas is good.
Going to clean the carbs unless somebody has an idea of something else it could be?

 

[Turk]

Stock jetting is pig rich in warmer temps.