Need some help dipping into the 11's

Yes the black smoke is usually a rich condition, so yes try smaller jets, do you know the size accelerator pump is now 30 or 50cc? Keep to the mechanical especially for racing. There's also the power valve that ypu can change as well. Just start with small changes, how are ypur spark plugs reading? You want a light brown on them if its black then need to jet down. What size demon is on it?