69 Charger 440 RT auto. Fresh, stock rebuild with new Edelbrock 1813 (800cfm) carb, stock points ignition. Starts and idles fine, base timing @12, all in @35. Off idle hesitation before rebuild (with orig AVS), tuning helped but not fully eliminated. Now occurring after rebuild with Edelbrock linkage in the "rich" hole. More recently, occasionally stalls at idle in drive. Starts right back up. Trans has been rebuilt, shifts properly. No unusual sounds (TC clacking/whirring). We didn't change the TC when the engine was rebuilt, so its the original unit. Could the TC be the problem?