Bent up stuff

All the above being excellent info., I am puzzled about the sequence of events that led to this damage. In post #1 (2) items catch my attention: "my motor was running perfect earlier today." and "Motor started running real rough and he said to drive it anyways."

Now it's not until post #11 that you mention "One detail I can thing of is that he did set the lash what seemed like half-*** to me by eyeballing the opening and closing of the valves." Did he do this at the same time that he screwed up the timing and other stuff? If so did the running rough start right then? My point being that if it was running OK before the valve lash, then that's when the clearance problems started, indicating not enough total clearance was set in system to start with.

The valves look too big (diam.) for the retainers and head pockets to me. Also if wasn't coil bind but the retainers hitting the valve guides, the valve seals should be crushed or split.

I understand clearancing rockers is commonly done but it does compromise the strength/integrity of the rocker. Best to work with the manufacturer to get compatible parts. If it has to be done, a competent machinist would use an end mill. Sorry, using a die grinder on rockers is HACK! Hope you get this sorted........