Yeah, some distributors/CPSs only have the pin to go by, no other hatch mark, but most people get that. If you're off by a tooth you'll find that to get the timing close to where you want it (10?BTDC) you'll have to rotate the distributor/CPS pretty much as far as the slide on the housing will allow. If this is the case, you're probably off by a tooth. IIRC, properly lined up and zero'd out the timing advance should be close to 0? with the bolt centered in the oval hole.
Clarkrc82, if you have a question about something... ASK. I don't mention these things for the sake of a cheap laugh... and you're welcome.
