My trade in was a 2001 zr800. Last season I got wind of an update on the pistons before cat released the bulletin. My motor was in the shop for a piston under warranty ( rod clip came out and scored the cylinder) and I told the dealer to change the other good piston (at my expense) for peace of mind. Now I get a letter from cat telling me about the piston update for free yet I"ve already paid for this out of my own pocket. My dealer said he would reimburse me for this but the piston kits are on back order. I think he's blowin smoke. Just wondering if anyone else is waiting?