I'm feeling that I'd like to try a steering damper on my bike, I haven't had any slappers yet, but I've defintly had head shakes around bumpy corners-- As of a month or two ago, the choices seemed limited to DP, ohlins (side mounted) or Matris. Is this still the case ? I'd prefer a top mounted unit if possible and I'm wondering if its really probable to get DP parts in a timely fashion? Can any s4r owners with dampers comment ? One dealer just told me he couldn't recomend Matris ???