Hi all, I am a relatively new rider and I have been trying to practice my emergency braking. I am only using my front brake for now (on the street I use both). I'm on a Ninja 250R. I do it in a local parking lot and there appears to be (unbroken) rubber streaks/marks left after I do a run. Is this normal? I really don't think I'm locking the front. Kind of spooked me a little when I noticed it. :eek1 Thanks!