When you have the frame off the rail, you can see the selector switch from the top. When it is switched to electric mode, you will be able to adjust the set screw against the lever on the back of the trigger to stop the trigger. Once you determine that it is correctly oriented, you can switch it to mechanical mode and the flat spot should line up with the lever on the back of the trigger so that the trigger will travel farther back.
Except for the Automag in front, its usually the man behind the equipment that counts.