Caster measurements for C63

[aquanaut]

Hello, in relation to my "Quaife LSD eating my rear tyres" thread, i had my C63 in for a full hunter alignment & suspension check yesterday. All that was required was some minor adjustments on rear toes but has made the car feel better.
The garage that did it mentioned the caster readings were n/s/f 11deg 12' & o/s/f
9 deg 42' . Is this within the mercedes recommended range. Seemed to think it was unusual for there to be that much of a difference between each side. Just curious and any suggestions appreciated.
Thanks

 

[WDB124066]

It may be set that way to make the car go straight on cambered roads. MB have a big problem in this regard and offsetting the castor is the standard fix.