I have a 1998 Expediton 4.6L 2wd. I recently changed the tensioner arm pulley and now the belt will not go back on. It is a Dayco belt 5080980. I am using a torque wrench and pretty sure the routing is correct. The belt is coming up short. My method is to put the belt around the altenator last (pretty common), but still dosn't fit. I also verified that the tensioner pulley is the same size as the previous. Any suggestions?