Here is a good primer on chain wear for those of us with chain driven bikes. I’ve not always been good at this, but have vowed to be better at all forms of PMCS in my older age.
I had a Scott Oiler on my old KTM and that always served me well.
Image credit – https://www.osha.gov/SLTC/etools/machineguarding/animations/chain.html
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