hello all you s-4 fans!! my 2005 s-4 is (comp.yellow) and has all the farings possible.i love my s-4 but some comlaints do come to mind ...it seems to run a bit hot,has a buzzing vibration that numbs my hands a bit,engine surge when creeping around town at about 2800-3200 rmp and touchy on takeoff.if you have any solutions to my complaints??? please e-mail me,or just let me know if you experience some or all of the same things i mentioned, no matter what i will never get rid of my beautifull bright yellow two wheel formula one handling,tourqy street fighting like a drug to me SPEEDE FOUR TRIUMPH!!!!!!!!!!!!!!!!!!!!!!!!thanks...RMFP