I had what Otto Skorzeny describes above some years ago before there were forums. Running a lot of grease through the cup on the distributor did not stop it. I don't remember how or why I decided to put a microdot of grease on the distributor cam with a Q-tip, but that stopped the points from squealing.
1950 GMC 100 Panel Truck, 1958 270, 3-spd Saginaw with BW OD, 3.73 12 Bolt Differential from a 1966 C10, Front Disc Brakes Bought it in pieces 9-1976, driving since 6-1978 Follow in the DITY | 
