We got a clear pic! & that is a 1st for me (that many marks). W the one at the bottom being that far seperate plus the 3 bunched ones being "advanced" I'd say the chances are good. Stick the straw in there & lets find out. Turn it CW till the bottom mark is at O on the tab then stick the straw in then w your breaker bar/socket move the crank back & forth a bit on either side of the O & see if you're at the piston "dwell" point (can move the crank back/forth a bit from O & the straw does not move). If so put that mark at 10 BTDC (make sure your on #1 compression) then set the dist.