Would part of the rear camber issue be from being lowered?
Lowering a vehicle with a multi-link "A" arm type suspension does cause negative camber that can be corrected on some vehicles. The "uneven" arms alleviate some of it, but not all. They even sell "camber" kits for some imports that will correct the camber for lowered vehicles. For us Mark owners, we either have to live with it or do some "customizing". This would probably grinding/modifying the camber adjustment ring to allow for more adjustment.