I appreciate the info guys. And how much MORE damage would I have done by Really getting down on the accelerator? Any thoughts on the WHY? When I tried to remove the slender tin oiler rail (that probably AINT what it's called) atop the rocker assys, I had to put 30 foot pounds on that center rocker assy bolt to break it loose. That seems excessive to me for that size bolt. Can anyone direct me to a conversion chart so I can figure out the Nm values? Also what size heli-coil do I ask for to repair this? Where's best place for time-serts? Which is better? Thanks for everything y'all......