Thanks Grumpy!
Re: idling - The idle screw is close to bottoming out as the spring is pretty much crushed. But there is about half a turn left. For a cast iron bore isn't the idle rpm is supposed to be 1200rpm. Anyway I don't own a tachometer.
Re: hunting - the carb was given a good clean. The fuel pickup screen was cleaned with a brush, ports were cleaned with carb cleaner and compressed air. I installed a new fuel tank gasket, flange gasket and diaphragm. There is a lot of vibration and maybe this is causing the linkages to jostle a bit affecting the idle. However, the hunting is almost neglible once warm. Are there any other adjustments that can be made to richen the mixture?
