Hello folks, im having a problem with the auxiliary carb on the 420g. As soon as i turn on ignition, fuel pump kicks in and the aux carb starts pouring petrol from the needle and Into the 3 ports or bores On the top of the unit (Air intake?). I appear to be missing a triangular top plate that is mounted with the bolts on the needle assembly and partially covers the intake bores though i dont see how this would cause the profuse leakage of petrol? Any ideas where to go fron here?

 

Sorted, plunger was sticking and not allowing needle to seat properly thus letting fuel overflow back up. Quick clean with wd40 and 2000 paper all is well.