They can be tough to remove. They've probably been untouched since the truck left the factory, and wear can create grooves that hold them in place. It may take fussing with the jack to get the proper alignment for removal. I know on my one ton it took a lot of effort to get them apart, but they will finally come off.
Tim
I am currently digging back in to a 1953 3800 (one ton) with a nine foot bed. I've owned it since 1979, and drove it until 1982 (or so). My wife got me involved in restoring it back in 2002, got the body removed and the frame redone, then things came up. Now I am retired and starting again. If anyone is interested I have photos on Imagur (
https://timwhiteblues.imgur.com/ ). I live way back in the woods in the Ozarks on 40 acres at the end of a 2 1/2 mile private road.
Tim
