Trouble with carby, I changed all the O rings, engine ran ok but not on full throttle, suspect rich mixture. Added new fuel needle and daiphram, no go, throttle not moving freely, removed steel retainer on diaphram/popet valve, engine seems to run perfectly, suspect lack of lubrication, perhaps some sewing machine oil on cam, carby moving parts, etc. would have been a good idea, have other folks run these engines without the steel retainer on the diaphram in the carby? I have the poppet valve set at C, and removed a restrictor brass fitting, on the vacuum line from the carby to the flywheel, any ideas guys? happy new year, Cheers.
