Tire discounters can’t align my Dart.

The missing elephant in the room, is, DID YOU TELL THEM what specs to use? Unless you are using bias tires, you do NOT want the thing aligned to factory specs, and many of these computerized in/out shops cannot seem to do any different.

Review this:
Turn of the screw: front end alignment for performance...

The so called "skosh chart" has been re-re-re-reposted here many many times