Track Day Rider
Join Date: Nov 2016
Location: SF Bay Area, CA
If your chain has tight spots that's more than likely the issue. Once that's changed out, see if it goes away. If not, then continue trouble shooting, but until then, I'd say that's the likely culprit. I've had chains get tight spots (and I'm religious about cleaning and lubing stuff) and experienced mostly what you described, always worse when the engine is engaged.
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