I have determined that either A] The idle jets are too big and/or B] The fuel pressure is slightly too high.
The engine is running rich and despite my efforts to lean it out - still rich. Thus the two conclusions above. To remedy this - I have ordered a fuel pressure gauge and a fuel pressure regulator. Once I can either reduce the fuel pressure (if it's too high) or confirm it's correct - I'll go chasing after the idle again by swapping in smaller jets. Learning how to tune Weber carburetors is a lot like calculus - you only learn it if you need to...
Everything that has to be ordered takes a week...every new issue that requires a part equals a one-week delay while we wait. We have a few things to do while we wait.
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