KRRZ350

Somebody must have a rev-up at there disposal or know this.

I need confirmation as to whether or not the bolt for the exhaust cam sprocket is indeed hollow and functions as an oil passage for the exhaust cams.

Also, I need to know the length of the bolt and/or if the bolt head rests against the surface of the exhaust sprocket set-up or if it gets recessed inside like on the intake sprocket.