But, be fore warned, not all "experts" are created equal.
For example, see this caster specification:
2011 E350/E450 Alignment SpecificationNotice how the specification for LH and RH caster reads:
LH 3.90 +/- 2.90 Degrees
RH 4.30 +/- 2.90 Degrees
If the LH is found to be +3.90 and the RH is found to be +4.30 degrees most alignment techs will interpret that as good to go, bang on.
NOT SO !!!
In reality, I would want LH +5.90 and RH +6.30 but I might have to stand my ground to get what I want depending on the "experts" opinion. Buyer beware.