Mazda Wheel alignment caster out of range
 

Hi folks, recently I have both of the front lower control arms replaced on my 2012 Mazda 5. I did a four-wheel alignment after that in a repair shop where a wheel aligner was just installed two months ago. I didn't read the alignment report until I got home. It seems the front caster was wrong after the wheel alignment. Before the alignment the caster was good (3 ± 1 degree, ), but after that, it was out of range (left side -2.79 degree, right side: -1.21 degree). How did that happen? Should I ask the repair shop to redo the front wheel alignment?
I attached the alignment report as well as the car's specs from Mazda's workshop manual for your reference. Thank you in advance!

https://cimg1.ibsrv.net/gimg/www.maz...09e889b98c.jpg
https://cimg4.ibsrv.net/gimg/www.maz...b89f2295e7.jpg

Caster & Camber is not adjustable on your car.