The timing mark should be at the top - as I read Bruce's post, he wraps the belt up around the pulley so the belt marks are lined up to the timing mark, but with the timing mark still pointing up, and this way the belt teeth at the bottom of the pulley will be correctly positioned relative to the timing marks when he unwinds the belt from the top of the pulley & routes it up to the tensioner/cam/inter shaft. The wood wedge makes sure it doesn't slip off the teeth at the bottom of the pulley once he's established the correct relationship of belt to pulley. Makes sense to me, I'll use his method next time - should save some headaches with the screwdriver down the spark plug hole looking for TDC...