nothing worse than people who post a question then never reply with a fix - I aint one a thum

So, this chain was in fact jumped. The first clue was the slack noted. I put the chain back according to best info I could find and it started.

it seems that this engine had a recall for chain oiler being too small and wearing out crank sprockets or something like that. At least the parts were updated and it seems this one had the updated tensioners (black, not some other color.) I think the crank sprocket is worn and chain is weak.

Thanks eddy, when I get this fixed I can cruise it down to the JY and search for a GEN-1 ashtray.