4 degrees off

Yes. Line up the mark you slid on the keyway with the associated mark on the gear with the dot on the cam sprocket.

I've seen people put these on, put it on the triangle keyway and line up the the "O" with the cam sprocket. Bottom line is your shouldn't have to twist the crank but a couple of degrees either way to get alignment. Doing what the others I've seen requires turning the crank 120*... BAD!!!

If the crank keyway isn't at about 45* or 1:30 position when you have it on and lined up... SOMETHING IS WRONG!

I don't like using crank offset keys... it screws with the timing marks.