[Chuck78]

Sorry Ron in BC, I replied here yesterday before I read my daily 60-66 GMC email list where you replied. Yes, I believe most likely that my mounts are just flattend out from time. I still think my cross sill "reinforcement strip" is possibly sitting in the wrong location, but my mounts are less than 1/2" thick, and the new ones are supposed to be about 3/4" give or take, so that would explain a whole lot.

Another member emailed me off list and told me that the cross sill is definitely in the wrong place if it's at the highest point of the frame over the axle. Double whammy on my bed there if that's the case.

I've inspected the frame several times, and no apparent signs of bending, but still have not been able to pull a string and measure to make sure the rear of the frame is level/parallel with the mid section.