Dots at 6 and 12 but rotor not in right place.

I am lucky this thread was started and so many responses were added. I replaced the cam and ignorantly put the marks at 12 and 6, had no idea of the one rotation rule, tried to start it nothing except my engine shooting at me. Just tried today turning the rotor 180 and first hit of the key, magic... Thanks for the input even though this is not my thread. I feel like such a noob.