It still sounds as if the blade plate bolt went wrong in the Victa assembly plant in Sydney (both using the wrong bolt, and stretching it to the breaking point), and if igor's explanation is correct, they did the flywheel damage as well. igor, whether they use a manual torque wrench or a power-operated one, it is easy to get the wrong outcome if it is maladjusted. How often have we all seen the guys in tyre shops screw the rattle gun torque up to maximum, and let it rattle away while it destroyed some poor customer's wheels?