Ahh - that makes some sense. The previous owner hadn't run it since it came back from CH Ignition - it sat in a box, in an apartment basement for probably 4 years before I purchased the plane/engine, still in kit form - then it took me probably another two years before the plane was built to the point where I could run the engine.

Hope I can still find parts - I can't find the exact Walbro carb model number on their web site, but maybe they still have parts for the older carbs.

Will tweak the mixture a bit first.

Thank you.