I am trying to verify the internal timing on my Bendix 1200 series Mags. These are the markings on the rotor gear |L8R| |L4R| The line before the L is red and the rotor lines up with the #1 contact between the L4R marks. I am guessing that the contacts should open somewhere between the L4R marks. I am thinking maybe at the red line and the spark will be slightly advanced of the rotor alignment and and the #1 contact. I have absolutely no mag experience but that's about to change.