Hmmmm.....
I just rode it 800 miles last weekend, and the noise is still there.
I got down real close to the engine and played with the throttle. There is a slight knock, like as from the piston, that seems to develop into the squeak at high RPM, hence the reason the noise at highway speeds. Could it be a loose piston pin/something else that causes a harmonic ring when the engine is ran at higher RPM?
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