I am having the same issue with my duke 200 (april 2012) model. Got fuel pump checked, got spark plug changed (they say they did it), air filter cleaned, but still there is a hiccup as u say. It happens when engine is cold i.e. upt 4 bars on temperature and around 4000 rpm. Small throttle or gentle throttle twist sends the bike int choking mode for a few mili seconds and then it jerks back to life.
I am also looking for a solution.
P.S. Someone mentioned to me to get the throttle body cleaned. Will get it done and see.
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