Conflicting information? Well okay let me give you some. First let me restate the obvious, the reason you cant get the bolt out is because its seized to the sleeve. This is one of the main reason our trucks suffer poor ride quality. The suspension become frozen and you lose the first couple inches of articulation. When I reassemble or install a leaf pack ( I prefer poly bushings over rubber just personal preference) all bushings and bolts get a good coating of never seize on metal parts and poly lube on poly parts to include the rear and front shackles that hinge. When I reinstall the bolts I use a locking nut and tighten just enough to gently snug all the components up. I never over tighten shackle bolts as this restricts articulation. The shackle bolts aren't really subjected to high lateral forces so just snugging up the bolt (with the proper lock nut with threads showing all the way through the nut) still allows the suspension to do it job. If your leaves are rusted in between and are "stuck together" this also leads to very poor ride quality. Some suspension companies will put plastic "slipper pads" in between the leaves to help with movement. On several occasions I've actually took an existing suspension that rode terrible disassembled it recondition everything with new bushings and bolts took apart and reassembled spring packs, new shocks and it was like a new truck. Make no mistake about it, it's a lot of labor.