Unique distributor question
There are two keyways in the reluctor. Notice the arrows on top. These correspond to CW for small block and CCW for big block. You use the keyway next to the CW arrow or opposite the CCW arrow, depending on how they are marked
This one has both arrows, CW for SB on the right side of photo
You sound like you have modded this. You may have changed "rotor phasing" Google that. Tons of info on the www