We went round and round on this for DAYS last time. We all beat our heads against the wall.
Do you have a timing light (IN YOUR HAND, not in a friends car, not at the house of a guy the neighbor knows, not being borrowed by the boyfriend of your sisters hot friend, but IN YOUR HAND)?
Is your choke fully open?
Are you doing the settings with the vacuum advance disconnected and port on the carb plugged?
If you answer "NO" to any of those, I would rather go shoot myself than do this again.