[JP Noonan]

I may be making things more difficult than they have to be but....

I don't have the rod in front of me (please, no comments from the peanut gallery), what does the pin look like? Is it a roll pin or solid? If it is solid could you drill and tap a hole on each side, then use the right sized bushings (without a shoulder), put the modified pin in and use fender washers and the screws to keep the bushings in place. Makes for a more complicated setup, and even with lock-tite the screws might fall out, but you wouldn't need to mach the shoulder on the bushing. Just find some solid Delrin stock with the right OD and drill the center for the pin.

Or maybe replace the stock pin with a clevis (trailer hitch) type pin, and use a cotter pin to hold the washers.

Just an idea. I'm not saying it's a good one.