Texasproton, I would like to confirm that if your new belt already has the marks on it, there is no need to count the teeth between pullies - just go by the marks.
BUT you do still need to count the number of teeth you move the crank pully, and then turn your cams the same number of teeth. Otherwise you might end up with the timing 180 degrees out. (The crank turns twice for every turn of the cams.)
Also, only ever turn the shafts (all 3) in the normal direction of rotation - never backwards.

PK