new bushings or new upper links are required to adjust rear camber.
rear links
View topic - Lensolo Adjustable Rear Camber Arms | THE Mercedes-Benz & AMG Forum for and by the Enthusiasts | MyMBonline.com
rear links
View topic - Lensolo Adjustable Rear Camber Arms | THE Mercedes-Benz & AMG Forum for and by the Enthusiasts | MyMBonline.com