The important thing is...at top dead center the rotor is firing on the wire that leads to #1 plug. Then follows the normal firing order 18436572.
Doesn't really matter where it's pointing as long as it's firing #1 at Top Dead Center , but the vacuum advance can hit the firewall or block if it's not centered.
Yes, you can re-clock the intermediate shaft so the slot lines up. Not all distributors are clocked the same way.
