Only runs off its head when throttle is set to full throttle. I have full control of it pulling the throttle back and it idles great. This is with no governor connected by the way. With the governor connected, it under revs at full throttle, still also have full throttle control through the range making me think the governor is the cause. Same results with your split spring method also which I was really hoping would work, but unfortunately if its not running perfectly I'll either keep at it until it works or give up. Unfortunately in all my fiddling ive snapped off the carby end of the governor cap so will need to order that. I haven't done a diaphragm yet or the short spring so will replace those too.
