weber 34 ict carbs

does anybody know the jet sizes for these carbs when used on a 1500S variant motor.
just finnished fitting a pair and from idle and up to 2500 rpm is fine but then starts hunting. spark plugs show it a lean on both banks after a drive. it is lovely driven sensibly but no good for hard use.
fuel pump and supply is good. even ditched the 009 and fitted the standard dizzy so timing is spot on.
float levels look ok but have no book measurment. feels like they are wrongly jetted carbs.