Thank you for the contact information. So far the engine runs great, except for the top end RPM - which I may be able reach now with the new prop and some mixture adjustments. It idles beautifully, and pulls hard even at the lower RPM. I've got some time tomorrow, Saturday, to spend making mixture adjustments.

If this doesn't work, I may contact Don or Carla before buying the replacement carb parts that may not have aged well from sitting around dry for so many years. I expect these parts are rather cheap, and are probably worth replacing.

The Zinger prop made a big difference.

I don't have room for a traditional velocity stack, not without cutting holes in the cowling. Saw that all my 2-stroke engines from my yard (Stihl engines) ran well with filters on the carbs. So I made my own carb filter/foam velocity stack using some Briggs and Stratten carb filter material - works great. Adding this piece does not affect RPMs - the side facing the prop is open, so I'm getting a bit of ducted air intact effect.

Dale