(1) Compression test
(2) Ignition test (dwell, timing, and if an electronic whizbang has been installed, upgrade to alternator)
(3) Check that the flange vacuum passages on the B are open to vacuum

Then install the Carter wink

Jon

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop