Hi! Thanks for the response. The way I am measuring the timing angle is by watching the spark plug, which is removed from the engine but in the spark plug case, firing.So, I set my needle at 0 degrees at the top end center, then move clockwise pass the sensor and then counter-clockwise till the spark fires. That is where I take the measurement. So, I don't think it is a matter of delay built up in the ignition. The total result is that the spark fires at 50 degrees before the top end center. What do you think?