I bought a Cougar that has a set of adjustable cam sprockets already. The motor in the Cougar came from David Z, so a set already exists. The cams are not, I repeat not a tube constructed style cam. I am pulling the motor out so I can pull the cams and other components from the motor to see what has been done to the motor. If anyone has any information on the mystery motor that came from David Z, please let me know. Thanks