Hi Guys - just stumbled on this thread. I have Sam's KZ1000 (I grew up in a house two doors over from Sam and our two families often raced together albeit it was mostly my brother Ray who raced professionally). It needed a little bit of valve work but since I had the head off I split the cases, had the head redone, new pistons, clutch, cam chain, etc. Ray passed away and I inherited his 20 motorcycles so they are all in some stage of tinkering. Hoping to have Sam's bike on the track this year.