How many miles are on your front springs, has it been lowered?
Have you tried a large highway with alternating crowns? Try the far left lane then the far right. What happens on coast, and when applying throttle...any torque steer, worn CV joint?
I suspect the toe was the initial culprit, then how much did it change after the alignment? Your tires might look evenly worn, but put a tread depth gauge on them...they may look even but may be slightly crowned.
What are your tire pressures? Cold air will send them down for sure.