First time posting here. A couple of months ago I bought a 69 C10, I have been doing a lot of work to it to make it run right. I am a novice and hoping to learn from it. I recently changed the fuel pump, carburetor, spark plugs, installed a fan clutch and a much better fan. I want to check and adjust if needed my timing, I've never done it before and I need some help. While looking at my marks I see two sets as you can see on the picture. My timing is where the Red line is, is my timing that far off? Or am I looking at the wrong marking? I was told I needed to disconnect the vacuum advance but that didn't make a difference. What should I do?