Nhmaf and Jim Rillie: Did either of you figure out where the leak was coming from and what did you do to fix it? Since I was at the West Bend Rally as was Nhmaf, I forgot to follow this thread. Now I see that there was no solution. I get oil on the wheel rim on the rear when on long hot runs. I never thought of using a wider brake actuating arm Orings or having another Oring groove cut by a machinist. Hmmm. Guess I better deal with all the seals anyway.