i was under the impression that the rotor arm position wasnt overly important as the timing is non adjustable and the ecu calculates when to spark tha coil. i thought you had to get the engine on tdc firing no 1, roughly align the rotor arm to face no 1 on the cap and then make minor adjustments to the dizzy to make sure the phase sensor inside the dizzy lines up, ie the first lug on the cam should line up with the phase eye spot on. I did this to mine after a rebuild and it fired up first time.