Hey Walter, hows it going, looks like backfire damage to me, i had unexplained valve events with my turbo wassers back in the '80s, a turbo backfire has enough energy to slam those turkeys wide open, the push rod then falls from the rocker socket and engages on the edge of it, or the follower wall, instant extra lift. a good case for more spring pressures with turbo, and lightweight valve train, maybe the stock rockers saved you more serious damage, stronger ones may be a backward step, i know what I'd rather replace, good luck with it all.
