[jhein]

Originally Posted by Formulabruce

You can take it out, back up the engine rotation equal to
One tooth,rotate it back slightly , and put it back in. This will put the vacuum nipple on the advance facing more straight forward.

OK, apparently I have mis-remembered the location of the vacuum canister, it does go on the driver side, it's just rotated too far up against the intake. So I think you are correct, it's probably off by just one tooth.