Stumped with a Idler Arm issue

In fact, in the service manual and the Mopar suspension manual, it shows how to file the idler arm mounting holes in order to position the idler correctly. There is a specific measurement for several points of the steering linkage to the floor. The Mopar suspension book covers it well. People argue me down all the time that is only used for race cars, but I have set every Mopar up I ever owned by those diagrams and they were always some of the best driving cars I ever owned.