Changes to the jetting are necessary to optimally tune your carburettor.
To make this easier for you, Naraku has put together various sets of carburettor jets suitable for all PWK type carbs.
Set of Naraku M5 main jets for Dellorto carburettors. Comes with 10 jets in 0.02mm increments. Set contains 70-88. M5 main jets are generally used in 19mm carbs or bigger.