Thanks, I offered that up to send the whole unit back but he just wants the valves and linkages. If I'm thinking correctly, if the throttle arm on the right that pushes the cross link to the valves on the left side of the engine was shorter, that should allow the left side valves to open slower (and hopefully match the right side). As far as the engine revving too high on start up & idle after I adjusted to .002 inch, I may close the gap on the valves a little more and see what happens. I am assuming high rev idle could be from the valves still too open, because that wasn't my problem before cleaning & adjusting things (In fact the idle was like 100 RPM). Im just kind of surprised the engine ran so well all these years with the right side valves not opening as much as the left side.