Welcome tclhb! Just got back from a long weekend trip... In our country, we observe the lenten season... No work from holy thursday up to easter sunday... That's riding week for me! Anyway, I also have that bar across the filler tube.. don't really know what it is but doesnt interfere with my filling up... at least that's the gas boy's problem...
Come to think of it, I think that bar is to prevent the nozzle from entering into the tank or for the gasoline boy to leave the nozzle unattended and be submerged in the fuel because once the nozzle is submerged, chances are.. gasoline will gush out because of the pressure... You just have to easily fill the tank up...carefully and attentively,,... well that's my theory...