And equal on both sides, within reason.

For instance.....let’s say the max caster they can get is 1 degree positive on one side but 3.5 degrees on the other.

You don’t want that much difference. In that example I would go for 1 degree and maybe 1.5 degrees.

Also...if the techs aren’t familiar with their machines it can be very confusing if they input YOUR vehicle into the set up cause the machine will pull up factory specs and create go / no-go windows on the display screen. These windows won’t be what you are after. Hopefully they know how to input the specs into the machine.