So as I understand it- as the rockers push down on the top of the valve they sweep and sweep out as I understand ? Soooo, again as I understand if the tip of the roller is already centered or worse towards the outside- you could risk the roller running off the top of the valve stem?? The remedy being to shim up the shaft to bring the rockers a little inside the the center so at mid- swep the roller is centered ??
