73 360 Ignition timing after Chain replacement

I'm slipping. Pun intended. IT IS ALSO possible that the balancer has slipped the outer ring and that the timing marks are incorrect. This is easy to check. Buy or make a piston stop

Like I said in my original post, I verified that using a dowel rod feeling piston movement through spark plug hole(poor mans piston stop) and comparing to another 360 balancer pulley and it matched up exactly.