2,100 RPM rattle fixed (I hope)
I took it to the dealer. It had a metallic rattle around 2,100-2,200 RPM between 125 and 175 degrees.
Since it only does it in this small temperature range, the techs could only try and locate it a few minutes at a time before letting the engine cool down again. After 3 days, they thought it was the oil pump, so replaced that.
Picked it up yesterday, and 4 rides from cold later, the noise is still gone. Keeping my fingers crossed!
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