I read that GM discontinued the wiping pads for lobe wear??? I haven't been able to find the service bulletin.

At one time the AC Delco box included an instruction sheet to add a small dab of lubricant behind the rubbing block.

1954 shop manual. Distributor lubricant. Bottom left.
http://chevy.oldcarmanualproject.com/shop/1954truck/54ctsm0005.html

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."