[rotorwrench]

The model A distributor is rather unique in that the breaker cam can be positioned in any location. The cam gears don't always have a deep dimple to indicate position. Some are so shallow that they can be hard to detect. Roll it up on the #1 cylinder compression stroke and start feeling for it before it reaches TDC. Make certain it's on compression and not exhaust. Once it is positioned, the breaker cam can be positioned to fire #1. Be sure the spark control lever is properly positioned before setting the breaker opening point. The distributor rotor is set with the breaker cam so it should align with the #1 terminal.