OME greaseable shackles: stock length

I recently picked up a set of old man emu stock length greaseable shackles. The problem I'm running into is that the bushing kit that the distributor supplied me with does not fit my stock leaf spring. The bushing intended to go on the leaf spring side of the shackle is too small in diameter for the leaf itself. I also purchased poly leaf spring bushings at the same time. Those bushings do fit the spring, but are a tad larger diameter than the shackle bolt that goes through them. Has anyone run into this issue before or have any suggestions?

The bushing kit I received was OMESB89

Thanks for any help,
Brandon