I think he is indicating that the timing pointer is rusty and he can not read the numbers
Here is a link to a picture http://www.perfprotech.com/store/app_themes/ppt/images/wiring-set-2-c.jpg
here is a link to an older iboats thread on the same issue http://forums.iboats.com/mercruiser...d-timing-pointer-3-0-lx-where-tdc-406399.html