I have a 98 XLT Limited and think the belt is slipping, especially when I am just starting, black smoke comes from under the hood until it engages. I replaced the belt with a new one and the same thing happens. I noticed when it is off that the belt has a lot of play in it between the driven and secondary clutches. Anyone know what the spec. is for the distance between the two clutches or how to make this adjustment? Thanks!