Originally Posted by Franc Rauscher

Totaly weird there man. That set of symptoms sounds exactly like what I endured two years ago when my NA threw a shoe. Mechanics and insurance agent decided to call it Hydro lock but I swear there was no water invalved.

But , I had the same issues with cylinders failing to fire and then firing after a shut down. In the end, after a top end overhaul, it turned out to be a failed fuel pump.

I am not suggesting this is your issue at all. But it was erie reading your list of symptoms. I do hope it turnds out well for you.