A long time ago a friend of mine who raced flat track and built his own race bikes with lectron carbs told me its a bad idea using K&N style air filters with CV carbs, because they need an air box to function right. Just thought id mention this since your using K&N style filters on your CV carbs, you may be loosing power by not using the air box.
CV carbs are crap anyway, they are a pain to tune. so if you plan on tuning it, it may be worth your time investigating on the use of round or flat slide conventional carbs, maybe carbs off a dirtbike with a special set up for your bike and a 4 into 1 cable ? Thats what i did for my XS650, used 2 carbs from Polaris 250 atv and changed the jets, needles, slide and adjusted the float heights.