Ah ha!
All the land pieces still rattling around in there.
Theory: Woodruff key breaks, advancing timing, detonation occurs for some time until lands cant handle it anymore. Question is why did the key break? I'll let the owner Eric talk about how hard it was to take the magnet off- seemed easier to me than mine in re: puller, but that may be a result of it already breaking loose. Threaded nut? Only he knows torque. I didn't reef on it.
Re: splitting the case: Yeah we will (did), we're not on crack. (yet)

. Wanna see how the cylinder looks? Wait till next post