The measurements do look well out! 6 degrees positive camber! Yikes, you must be able to see how bad that is.
I think you read the information incorrectly. Its 6 deg caster, NOT camber. Caster is adjusted with the tie rods. Camber with the bottom arms. Both work in unisen, that is, when you adjust the caster, the camber also alters slightly, or when you adjust the camber, the caster also alters slightly. Ride hight will have a similar effect on these angles as well.
Have you replaced all the suspension and subframe bushes?? no point setting the suspension up with knackered bushes.
Another thing to think about. How does the car sit, ride hight wise. Is it even all round, IE same from side to side, rather than front to back. Use the corners of the sill, at the seam, as a reference point.
Once you have set the hight correctly, replaced all the bushes and it still not right, then its time to think about adjustable components. This is for the front.
The back In my experience always needs the adjustable brackets. Ive never seen a mini thats had the same toe setting side to side nor have anything other than posative camber and again different from side to side.