Don't give up on it! I'm too new, and too novice to give any feedback other than what I read on here for un-sticking one; BUTafter going from battery, to cables, to starter, to pulling plugs and squirting a bit of liq wrench in cylinders (then krill later) , to barely prying on flywheel, to tensioning belt and urging fan/balancer back and forth 1/8", my 55 235 finally turned over with the plugs out. A week later (thursday) I put plugs back in & it started!
I know I'm not helping with advice, but I read every post I could on the topic, and the "trick/tip" that trumped all was patience. 15 minutes a day easily nudging it for a month & it finally woke back up.
I'll post pics & video when I can- keep charging!
Brad
