Can anyone explain the difference to me? I only have info on the Super Z. Looks like they both come with the same options. Does the Super Z have bigger pumps or what? Also when demoing the 66" Super Z the 26hp L/C Kawi would have low oil pressure warnings if I idled it back to fast. If I did it in stages it woulsd not happen. If I pulled the all the way back and cut off the blades the engine oil buzzer would come on, or it would die with no load on the engine. After 6 hrs or so it worked normal never happened again. Anybody know why this happened. Was it because the engine was not broke in. I had no instructions for the 3 day demo regarding engine breakin etc.