I set my distributor drive with the slot pointing to #1 bolt on the intake but when I install the distributor it has the rotor at #4 or #7 not straight ahead on #1. (Engine is on TDC #1 compression stroke). It is a Mallory Unilite with mechanical advance. Anyone know if they are set up different than the factory dizzy and I just need to rotate the drive gear to get the rotor pointing forward.