Hi again Tom. I have since found out (through some research on the web) that kawasaki motors and especially the ZXR´s rattle. I haven´t had the valve clearances checked yet. How is your bike running after checking the valves and carb´s? I am having an occasional starting problem at the moment. I think its ignition related, or the neutral switch. I am hoping to sort it out. Its annoying more than anything. I have to figure it out. Even though i always get it started when it happens.