I am in the market for a bushing set kit for a '92 HDJ80. I usually go OEM, but personally I believe some parts are just made better than they were in the early '90's. I have found poly kits in 21,23, and 25mm. Can anyone tell me what size I would need since my manual does not specify other than part number? I am too worried to take mine apart to measure it if I can figure out what it is first just in case mine crumble as I disassemble it.