My ’53 3600 has (by prior owner) a power brake conversion with dual master cylinder, part # KORN775 from Brothers. The past owner assured me that all of the wheel cylinders were either new or completely rebuilt. I have carefully tried to adjust the brakes per the shop manual but when I apply the brakes hard, the booster really works but usually locks up one rear wheel. I turn the adjusting wheels until the shoe drags slightly then back off 5 notches to let the wheel turn freely.
Is there a proportioning valve kit for drum/drum applications? Brothers has them for Disc/Drum or Disc/Disc applications but not for drum/drum. Any suggestions?
Thanks
John