He's fine. I've been traveling a lot back and forth to Dallas on business.
The first time I heard the sound I thought of valve tapping. But, that didn't make sense as it was unaudible with the clutch pulled in. Also, it doesn't do it when the engine is cold. It does it once the engine is warm. I can slowly rev the engine and it'll start (not sure of the RPM range, no tach). But again, it's most noticeable to me at around 25 - 45 mph, probably due to lack of wind noise canceling the sound.
It's made the sound from day one.