Bill,
CMP Sept 07 was the last time for me, on the Laverda Strike I used to have. (I last had the MZ out at Talladega in 06 but was too worried about possible mishaps to track day it anymore, being my main bike and making payments, but man it was sweet out there!) Ended up with a rod/crank knock developing in the Laverda at CMP while running down and passing a 64 year old rider on a Aprilia Tuono!! Really flogged it....Was fun though. Bike sat for a few months and then I sold it. I'm not ruling out snagging an MZ at blow-out pricing though..as a source of spares, and a trackday weapon. I know it can handle any punishment you throw at it.
Lorin