cab mount question

[MikeyMan]

I had issues when I changed cab mounts on my 71 1/2 ton LWB Fleetside.

My passenger side cab was actually riding on the frame rail. I have pin striping, so I used that as a level line to get the cab height aligned with the bed. My cab mounts seemed a little shorter, so I had to do some shimming. I used my limited carpentry skills and some imaginative fabricating to make the cab sit right. My cab supports and frame mounts had various spots of rot. I ended up fabbing braces and reinforcements to get a couple more years out of this truck. I did not touch the core support mounts, just the four cab mounts.

I got everything leveled and bolted down, and it rides pretty good. My gaps are are less than perfect, too. But, my doors close and latch fine. I recall the door(s) rubbing at times during the jacking process. It doesn't take much to tweak the cab and cause alignment issues. You might try to adjust by adding or subtracting shims/washers.