hey i have just about the same mods as you, my setup is carbs have 350 main jets, vitos needles withclip on the last position from blunt end, 35 pilots. kn filter in box no lid,stage 3 port, head milled 30, v force reeds
sst pipes. and i have power from bottom to top.... the needles and v forces really woke up the midrange. hope you find your midrange !!!!