Well it was simply a misunderstanding on Pat's part.. his response was that there were no vent hoses attached to the float bowls and he is correct. The vent tube is not connected to the float bowls.. it's attached to the line between the carbs. The vent tube for the float bowls is there on all models and most vent to atmosphere but I suspect on the Ca. models it will vent to a carbon or charcoal cannister.
The hose shouldn't really be plugged at any time because it's function is to let the fumes out as the as the fuel expands from the effects of heat and should allow air in as the fuel level drops in the bowls.
