Just a thought but have you fitted an inline fuel filter ?

just check it is flowing through in the right direction !

happened to me on a ccm and caused no end of bother until I realised what I had done.

Hope you get it sorted soon I bet its hot out there.

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Ride On :tenere:Camel 2008XT660Z
harvey mushman did it in the dirt Uma 1994 TT250R