Very cool that you were able to do that class/event. It brought back great memories for me doing the Bondurant High Perf. course there many years ago. Learning trail braking seemed to be the hardest part for everyone. It is a delicate ballet of heel/toe coordination and it takes a lot of practice. I recall just when I was getting the hang of it we moved on to something else. I was unaware that we cut out when applying brake/throttle together in the X. I haven't gotten extreme enough with dinasrt to notice this; but you have me curious now. Let me know if you do this course again, it sounds like a real good time and experience. Bob