At the point of mounting the cab. My truck came directly bolted to the chassis, so I have no reference or pictures. Great info, yes all the instruction sheets are horrible. Utah I can see your logic in longest pad at #1. Looking at the pics below, I still have some questions. The screen shot from the Jim Carter catalog appears to have the longest and shortest rubber insulators on the bolts for the #1and #2 position. (But which one is 1 and which is 2 remains a debate). Then shows the mid length rubber piece on the mid-open bolt which I assume is #3 and should be used in conjunction with the wooden blocks. #4 I believe is the rear cab mount with the larger spring and round insulator. The instruction sheet leaves it up to interpretation. 1 and 2 have insulators, 3 with the block has an insulator and it shows the insulator being smaller than the block. Which way does the block orient when placed on the frame using the diagonal cut of the block as a reference point. This could change which insulator is used. All help, especially some pics of the #3 and #4 mounts installed would be greatly appreciated.
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