Darn it you guys - I fabricated my shims today, bought longer bolts and was all set to level that cab tomorrow; now you’ve got me wondering if I should drop both shackles and replace the bushings , a job I’m not especially excited about.
I believe there are bushings in the rusty shackle, but without the familiar shoulder. (See images) Again - I suspect that unit is an aftermarket piece; maybe it came with shoulder-less bushings. One of the two bushings in the greasy, older looking shackle looks pretty good, the other does show age on the shoulder.
I have driven the truck extensively; there are no obvious symptoms of worn out bushings.
