Hi Dave, I notice with most 'power-torque' engines the 'O' rings also fail, particularly the one under the starter, and of course the carby 'O' rings. This failure will cause these symptoms. Did you replace the carby 'O' rings when you put the carby back on?
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