That's right. You probably already know this but you have a crank sprocket for +4, 0 and -4 degrees cam timing. If the sprocket slot with the triangular slot in the top is used, the cam should be advanced + 4 degrees. The difference between +4 and +6 degrees is going to be slightly perceptible.... +4 degrees change will be easily noticeable for an experienced driver who is looking for the change but won't make a difference like a new motor.... You're gonna need to find a lot more degreeing error to make a BIG change; one tooth off would be around 15 degrees.
