The original regulators did not use a roller, it was just a
stepped post the slid on the channel. One washer was inside the
channel and the other out side. The leather washers kept the
post in it's proper location in the channel, held the
lubrication and kept it from rattling.
http://www.pbase.com/dennygraham/1950_doors&page=all To set the new posts I used a ball bearing and a hydralic press.
http://www.pbase.com/dennygraham/image/120007835 Denny Graham
Sandwich, IL