I looked up cab mounting hardware on the vendor websites to try and be informed a little before posting, don't see any shims in the kit. Just a straight forward hardware kit with what look like all flat washers, round and square and some "bushings". However, if the assembly manual says shims, then shims it is. They do have universal shims for 1936-1991. What needs to be shimmed if a new mounting kit is used that has no shims supplied? What are you trying to align? I think that would help the poster. Question was general "crash course" on shims. I did not know the cab to frame was shimmed and not body parts, That is opposite of TF. When disassembling old AD trucks, do you find factory cab to frame shims of varying thicknesses in different cab mount locations? Like they were trying to "level" it with a level? If you put the cab on first, nothing to align to? Good work on the 51's Fred!!
