Carb overflow

if 914, overflow from AIRBOX, dont worried. or from carburetor bowl, then weight the float tht should be less than 7grams.

if more than 7 grams, replace with newone , torque 5.5 Nm ADJUSTMENT screw.

I should have mentioned, it's a 912 ULS and it's the carb overflow on only one of the carbs that is discharging the fuel.

If it is the float, would it be suggested to replace both carb floats? 

yes, maximum weight of floats pair in dry condition is acceptable 7.00grams.idle 6.5 is good. measure it and re.confirm please.

if more than 7.00grams, replace it