So did you remove the right rear already ? Have you tried spraying a lubricant like WD 40 between the backing plate, and drum lip, or anywhere else you can get it in there ?

Spanky Hardy
Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers

1948 Chevrolet 5700 COE Holmes HD W35 Wrecker
In the Stovebolt Gallery
More pictures on Photobucket

1950 GMC 250 1-Ton
In the Stovebolt Gallery