Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > Supersports: SS / SuperSport / Supersport 950 > don't feel right

[whorlicks]

hi.
unsure how to explain this but here goes.
750ss bobbed with pod filters 2 into 1 exhaust.
starts fine little bit of misfire when cold but generally ok
when riding its fine under load but when i'm being steady it sounds feels like its burbling and the only way out of this is to down shift but then the revs feel too high.
carbs have been off cleaned, new idle screws fitted.
i'm assuming jetting or carb probs but am i missing something.