Hi allanquartz, Have you pulled out the kill wires from the carby, as sometimes the little rubber grommet wears out and the two wires touch thus meaning you won't get any spark. It can act erratically when this is worn.
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl