Usually a toe in will pull consistently to one side or the other, at least in my experience it has. I think they messed with your steering box.
Check your toe in anyway. Get a friend to help you. Mark the vertical center of your front tires on the rear and front of the tires. Make sure your parking brake is on and your wheels are perfectly strait (dont worry about the steering wheel). Then you and a buddy measure the distance between the front of your tires at the center line you marked, then do the same thing in the rear of the front tires. The front of your tires should be about 1/16" closer then the rear of your tires.
I do my own alignments and have been for a while now. If your measurements are where they are supposed to be then its not your toe in.
Complete rebuild axle/engine/everything swap in progress: Building stock width 44's with 302 from 01 Explorer. Motor has GT40p heads, Cobra Intake, and truck cam. Running A9L EEC IV stand alone engine from late 80's-90's Mustang GT. Big Bearing NP435 married to NP205.