2013 Hyundai Sonata - Caster at low end of Spec Range

2013 Hyundai Sonata - Caster at low end of Spec Range:


For this generation of Sonatas(YF 2011 - 14) Caster is specified
as +4.4deg, + or - 0.5deg.

Mine: L = +3.8, R = +3.9


Question, since caster on my car is nearly dead equal, but
is barely at the low end of specified range, #1 how did it check
in that low, and #2 is there anything that can be repaired, bent,
or replaced to get it up into the middle of that range?


Thanks in advance. And yes, I know in *theory* caster and
camber cannot be adjusted on a unibody where they are
defined by locations of control arms and built in strut tower
angles. But is there any way to 'cheat' and add more caster
without throwing the other angles off?