You would think! This is one of my Stelvio's small mysteries right now: Slightly loose right shaft bushing and a hiccup between 5-6k would seem connected, but no leak detectable with smoke, argon, or carb cleaner. 
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TPS Fault on Stelvio NTX (2012)
- Thread starterAlanNZ
- Start date
As stated via email, I think your higher RPM hiccup electrical.You would think! This is one of my Stelvio's small mysteries right now: Slightly loose right shaft bushing and a hiccup between 5-6k would seem connected, but no leak detectable with smoke, argon, or carb cleaner.
Oh for sure; I trust your diagnosis.
I was saying that it’s weird because you would think that there would be a connection between a loose shaft bearing and a hiccup, but there isn’t in this case.
Sorry for the lack of clarity.
I can get the bikes I've had to cough and sneeze when I wiggle the butterfly shaft, and idle is never steady or very low. I can also see a fluctuation in TPS degrees as well.
Awesome information! Thank you!
Any thoughts on preventative maintenance for that bushing?