steering and handeling help, 73 duster

Totally agree on this, and just because it has been aligned does not mean it's right.
Do you know how to give it a quick check with a tape measure?
I have poly LCA and strut rod bushings so I run about 1/8 in toe in.

Also I didn't see any mention of of strut rod bushings in your post.
Those are pretty important for the problem you are having.

No i dont know how to check the toe..strud rod bushings are new also