Borrow a Vstrom for a week. Then the ST will be the smoothest bike you have seen in a "week".
Maybe I am lucky or dense, but the Tenere I bought (orphan 2013) had a little off idle stumble. The throttle cable had a ton of free play also. I corrected the throttle immediately and rode the beast. I never, ever mess with fueling on new bikes until some miles have built up. Now with 8,000 the bike rides beautiful.
I repaired bikes professionally for almost 10 years before switching occupations (anal retentive, OCD engineer now) then tinkered with bikes for 2 decades more. The tenere is pretty close to perfect.
My Vstrom ran a very similar clutch which had some vibration "chudder" we called it. Many switched baskets. Others just rode....and rode....rode some more......then as miles built up forgot about it. My.....as some have put it, cheap and poorly designed basket was still going strong at 100,000 miles. Never notched, never got worse, never exploded....just vibrated under load at a certain rpm.
I expect this bike to go 100,000 miles also and would never touch the clutch until it started slipping. ::021::
See ya on the highway friends