Whenever I have a good running engine I am about to do a t-belt on I always mark the belt and pullys where they are, then I take them off and transfer the old belt marks onto the new belt, then install the new belt and line up the marks on the new belt with the marks on the cam and it is done, fool proof if you are carefull.

I am not causing global warming, I am just trying to hold off a impending Ice Age!