I have never seen this on engine rollers but I see it on a lot of caboose cars and passenger cars. The roller can shift side to side on the pin by about 1/16 of an inch or more. On my layout this causes the rollers to snag going through some of the switch combinations I have. My fix is to shim with a small piece of copper wire but there has to be a better way than that. Is there a circlip size or other technique that will work better? Someone out there must have a smart fix.
Thanks, Scott