Stalling 65 273 Barracuda

need enough initial (15 would be a good start, definitely NO less than that even tho OE is 5BTDC-2bbl and 10BTDC -4bbl which ain't enough). Are you on ported? for the stalling I would check (1) float level (2) adequate idle speed and (3) take out the two idle speed screws and shoot a 3 second blast of starting fluid or brake kleen (which ever can has the thin red nozzle) or open the nozzle to fit the straw) into each idle screw open ing then replace the screws & confirm they are opened enough turns out from lightly seated cuz a too lean idle will make it die. First count the # of turns IN to lightly seated to get a baseline on where your idle mixture adjustment screws are at RIGHT NOW. On the hesitation: float level and confirm you have an AP squirt starting immediately upon tip in (which is right when you move the throttle).