Tom - Carter also had the idle air bleed system on a few of the WCFB carbs.
Don - in the FWIW category, if you end up with a carb that has been "rebuilt" by a commercial carburetor rebuilder, you may not see a hot idle compensator; as most of them were removed, and the channel plugged. The HIC was pretty much only used on cars with automatic transmissions.
Jon.
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"Good carburetion is fuelish hot air". 
"The most expensive carburetor is the wrong one given to you by your neighbor".
If you truly believe that "one size fits all" try walking a mile in your spouse's shoes!
Owner of The Carburetor Shop, LLC (of Missouri).
Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings.
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