I got my 302 running and I was messing with the timing.I set the inital at 8 with vac advance plugged. I then wanted to check the total. I have a craftsman light with an adjustable dial on the back. So I set the dial at 36 and reved the engine to 2500-3000. I expected to see my mark at 0. The mark was way retarded. I set the dial to 0 and the timing mark never moved much from 8. What am I doing wrong? I also noticed that #7 header tube was glowing and 5 was starting to. Thanks!