Yep - my ZX-10R had next to nothing on the magnet during break in, same with any Honda or Yamaha I've owned
What viscosity are you running? I tend to think these engines need 10w-50 or perhaps a blend with a couple of quarts of 20w-50 (synthetic of course)
Had whatever shell oil the dealer uses. Have now gone to motul 300V as that is what I used in all my other bikes without a problem. The viscosity shouldn't have an effect on the shearing of metal rotating components, but I suppose anything is possible. Will do another trackday soon and see what comes out then