Yes Dan, that's the Tech Tip I was referring to.
Here is the link to a PDF of that Tech Tip that results in clearer drawings and a little more text: https://www.stovebolt.com/techtips/cab%20mounts.pdf
It is interesting that the illustration from the '42-'46 Shop Manual seems to indicate that my suggestions of where which rubber/fabric pieces go, may be different from what the factory intended...but then again, the factory was dealing with a cab and frame that were intended for each other!

Nick
1940 KC Model 1/2 Ton Pickup Project
(with '37-'39 Bed and what we think is a '42-'46 Frame)
Taos, New Mexico