Found it down in post #43. That photo shows about 3-4 degree before. If you look at the fan to determine the direction the crank rotates, it makes it easier. In that picture the crank has not quite reached the marker, so it is BTDC. The way I set the initial timing is I pulled the number one plug and left the ignition on as I slowly turned the crank. When the spark flashed I stopped turning and noted the position of the marker. I then adjusted the dizzy until I got the mark where you see it when the spark flashed. That is good for initial starting, but after running I have since advanced it several degrees after drive testing.