Correct......no deflection adjustment on the stock secondary. My stock clutches did the same thing and when I swapped to the QSC/STM it went away for the most part unless I got my belt very hot. So I would have to assume it is related to the fact that you are still running the stock secondary.....I have been meaning to put stock back on and checking it. Heavy, I have stock secondary so I can't adjust deflection,,,,right? Also, Hunter, it is at slow trail riding speeds, not idle.