This may not get rave reviews, but I flipped the bushings in my O, left to right and upside down. They were only really wore on the top because that is where they ride. I couldn't justify a $50 set of bushings, and they came dimpled and grooved for a reason so I didn't go with a smooth generic bushing.
I just did it this week so I don't can't speak to how long it will last, but with the limited number of hrs I put on the machine each year, my bet is it will last awhile.
Bill
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