Carb rebuilt, engine still hesitates.

I stumbled across an article this morning. This is a CAP car. This is what the article said about timing.

"The CAP cars’ base ignition timing settings were very retarded compared to the non-CAP cars. A typical non-CAP setting was 2½° to 7½° before top dead center; CAP cars were set at top dead center to 5° after top dead center. The new control valve’s vacuum modulation fixed the sluggish drivability and poor fuel economy that would normally result from such late ignition timing settings."

So I went and checked the timing. It was set at 5 degrees BTDC. I changed it to 5 degrees ATDC and the car runs much better.