My 2012 4matic is making a grinding noise while going over speed bumps. Replacing the stabilizer links did not fix the issue. I have narrowed down the issue to the UCA bushings. Parts are already on order. I have been unsuccessful in searching the web for our car's suspension torque specs. I specifically need the torque for UCA to frame bolts, UCA ball joint, tie rod to steering knuckle, stabilizer link to stabilizer, stabilizer link to arm, shock to LCA and shock to frame.