What does the supposed "misprint" call for in the way of timing mark alignment? The timing marks will align opposite each other (cam sprocket at 6:00, crank sprocket at 12:00) once every two turns of the crankshaft. On the next turn, the crank will be at 12:00 and the cam will also be at 12:00. Nothing wrong with either situation, it just takes two turns of the crankshaft to make the marks align again.
I rebuilt a Ford 3000 3-cylinder farm tractor once, with a very complex gear-drive timing system. There were several idler gears, accessory drives, etc., all with timing marks. I did the "turn it twice" check, and some of the marks were out of synch. Tear it back down, reassemble, recheck- - - - -repeatedly! Finally, I kept turning the crankshaft, to discover that the idlers had a "hunting" tooth pattern, and all the timing marks finally re-aligned every 96 turns of the crankshaft! That's like mechanical clock gearing, so the gears don't develop a repetitive wear pattern!
Jerry
