Idle speed is the easiest, quickest, most probable cause: slow engine idle speed down if you can. If that doesn't work, the next I would try is rollers: are they stock weight? While you are in the CVT inspect and possibly replace the belt. It isn't the cause of the creep but you don't want to have it break, right? Mine broke after 1000 miles because I bought a cheapo belt. (Just sharing my stupid mistake...)