Samo, I have seen your pictures and I think the common pipe is not all right. This pipe needs to be higher than the others pipes in order to get that a possible leakage from one vent returns by the other vent.
This may be your problem only if the fuel leaks by these common pipe, but not if leaks by the bowl vent.
Saludos
Samo, before starting your mod, take account about a detail.
This is the failure I found:
The left air vent was strangulated by the exhaust.
I mount a spring on the new hose to avoid it:
This is the mod I did. It's a temporary solution because I have not suitable T connection.
Greetings
Hi, Samo.
I did these mod last week and I think leakage has stopped. I don't need to close fuel valve when I stops the bike.
But I'm not sure at all, because I have not tested enough.
Greetings
