I mean the housing/axle not shock itself
You can adjust camber yourself via the strut mounts, this will also adjust caster so should pull that spec a bit closer too. You can get an app for your phone that will give you an acceptable camber gauge. Measure the r/h wheel and then try to get the l/h to the same measurement.
King pin angle can't be adjusted since it's built into the stub axle assembly, but it should be the same both sides
If there's no free play in any of the steering components, and you don't want to replace the strut housings, then you could get some more toe dialled in to mask the issue, zero toe on a rwd will rarely track straight