This may be a dumb question, but why is the overspray an issue on a CE motor? If the factory didn't paint the motor, what's the fuss all about? 
 
 
About the flat hood, wasn't that replaced by the ZL 2 because of the intake needing extra room for enough clearance to close the hood? 

I was told that was the reason it was called "ZL2", after the ZL1.