I bought a pair of UHMW bushings from Tatman (gregboats.com) for $9 which I seated in ash; the only difficulty was getting the right size drill bit to enlarge them for my Sawyer Cobra oarlocks. Let me know what else you find out there.
You are right--I misrecalled that. I had a hard time finding the right drill bit to drill the ash. In retrospect I should have simply overdrilled the wood and seated the bushing in epoxy. Thanks--Bill