A while back I changed the rod ends that hold the brake calibers in position. The original ones rattled quite a bit. I installed ones that had zerk fittings in them. They were from Aurora. I have found that unless you keep them greased, they too would start rattling. I removed them and installed teflon ends. They are quite a bit tighter and don't rattle. I'm leaving on a 2500 mile trip in two weeks. I'll report how they work out. I rode about 25 miles and they seem to be pretty good.
The model numbers are MM-6T and MB-6T.
Two right hand threads and two left.
Rick