After market VES bellows may be prematurely disintegrating around the center holes, due to highly repetitive flexing at high temperatures. It may take no more than 6 rides. All bellows eventually crack around the center hole. The after market bellows involved here were the bright orange type. In this case, the bellow coating started bubbling away from and de laminating from the inner thickness of the bellows. This defect is in addition to the previously discovered wear defect of the stops on the center stem becoming dented when the valve is extended, resulting in the valve tips impacting the piston and rings which could lead to all kinds of bad things happening to the engine.
