I have a clunking noise in the rear that I am trying to locate. It could be in the rear end itself which I know is worn out and I will be getting it rebuilt in the next few weeks. I also am wondering if it's in the LCAs. I have the MM standard duty LCAs and have replaced the chassis end poly bushings already because they were worn out. Now I am wondering about the axle end. Has anybody had to replace or heard of anyone having to replace the axle end spherical bearings and is there a good way to check them for wear?