I'm right in the middle of adjusting my timing up to 15, and I found out I don't know how to read the tick marks on the crank pulley. There's a yellow, red and blue one and the marker on the block is between the third and fourth tick mark on the crank pulley. What does each mark represent? If it's stock at 8 degrees on a 99 B14, where's 10, 12, and 15? I borrowed the timing light and I need to bring it back soon. Thanks.