with the head of the jet level to the bridge i would drop the jet 3 turns as a basic starting point when running and well hot
then adjust the jet up or down in small movements to give the best idle then reduce the idle to around 700-800 and fine adjust again .
to balance loosen the connecting rod clamp, back the idle screw of and turn to just touch the casting, turn in 1.5 turns and retighten the connecting clamp .after mixture setting adjust both screws to get a fair idle .
there is no dark art here .
do make sure the jets return fully after choke is used .
Pete