'99 Drifts Left Even After Alignment

I have a '99 with almost 60,000 miles on it.

My power steering whines a bit, especially with the A/C on, and the other day I was parallel parking and noticed a pop in the front end.

After the pop, I started to notice that the car was pulling to the left.

I took it in for an alignment. It cut down on the amount of left drift, but did not eliminate it.

I took it back today, and the shop rotated the tires to see if there was a tire problem. No luck, as it is still drifting left.

I compared the amount of drift to my wife's Cavalier (which drives dead straight) and I think it is definitely unacceptable.

Could there be a problem in my rack?

If all my alignment measurements are bang on, why would the car still drift left?

Any thoughts?

Thanks,

Dave

I'm gonna guess worn out or loose control arm bushings? I do remember reading somewhere about a revised Torque spec for the lower control arm bolts. I took my 01 in for a clunk in the front end, and they re-torqued those bolts, the problem on my car was the upper strut mounts.

Please let me know. I have a 99 and I had alignment after alignment and it still eats my tires up on the outer front driver side. They say I have no worn out parts (control arm bushings, tie rods, etc.). So, is there an issue with the car?