Yahoo!!! Fixed it!

Carb arrive in today's mail. Got it installed tonight, and fired it up. Aside from being hard to start because the spray bar was clogged (I clearded it out with a fuel bulb and a little pressure) we're talking WOW, what a difference. Talk about throttle response. It got too dark to tach it, but it revs, comes down to an even lower idle, and ... it stops when the throttle is closed. I couldn't be happier.

Picture shows three obvious differences as well as different needle valves:

Edit, oops, forgot to upload the pic.