No, it got hot under the spark plug and melted off some of the AL on the top edge, down into the first ring groove. Not horrible, but not one I'm putting back in either.
It was running when I dove into it, I was just going to fix the ignition module and leak, but the leak meant resealing the case, so I tore it down.
More than I was planning, but better than oil everywhere and ignition that cuts out when hot.....