fumes from carbs

hi i can smell petrol around my carbs
i have pods on, where my carb bowl drain tubes are
if i look at them( i have no tubes on them) you can
see petrol fumes coming out is this normal
theres no dripping petrol anywhere i"ve always thought
i use a bit to much fuel can worn float needles cause
this and i still get awhite residue on oil filler cap
bike runs fine though
cheers dave

Does it mis-fire? Could be raw fuel mixing with the oil causing the white residue, I know water and oil make a milky looking oil. Maybe somone else can elaborate.

You probably will see some fumes with no vent tubes.