I checked my timing last night, I was at about 10 degrees; I bumped that back to 8 degress BTDC for now. My engine is still very tight (only about 50 miles on rebuild). I'll run it that way for about 100 miles and see how that does. The car cranks much better at 8 degrees, it also seems to be staying cooler. I'm still going to have the 15 pound Radiator Cap checked.