Yeah I'm similar, once I crash the head goes and a few more follow! Although not quite 16!! My 1 crash time of 19.48 was a fluke I think. I have not come close since!
I did a personal best of 19:59 on Anstey's Supersport Honda, with two crashes. I completed an entire lap without a crash with Cam Donald's Supersport Honda but only managed 20:27. Probably being too timid trying to avoid a crash.