Timing belt snapped, so when I replace it, I line up all the respective timing marks with crank positioned at TDC on compression, but shouldn't the Dist. rotor be pointing at #1 and is there a specific # of times to rotate the cams, so the appropriate valves are open and or closed? Or does it not matter as long as the timing marks on the cam gears are lined up. I already made a position mark for the timing on the engine and distributor for aligning purposes, so can I remove the distributor and rotate the rotor to #1 and re-install lining up the marks, and then will everything be set. The book is helpful but not quite enough info. Your input would be greatly appreciated. Thanks.