Still pulling to left after alignment

As previously mentioned..... First, Engine off, watch the steering wheel while starting the engine.... It should not move... If it does that's the first thing that needs to be corrected...

Second, jack up the car and try to spin the wheels, if one has significantly more drag than the other that's a sure sign of a brake issue.. If that's not the case good, but your not done, have someone step on the brake pedal & release it, then try spinning the wheels... The brakes should release fully as soon as the pedal is released...

Third, as mentioned swap the tires & see if the pull follows the tires...

Your caster being .6 is a little strong if it's being used to compensate for road crown, but not so strong it would cause a significant "pull" it would cause what I would describe as a "Drift"