Bought a new serpentine belt about a week ago as mine was looking gnarly. Noticed some excessive noise as I was getting ready to change mine and assumed on of my accessories is on it’s way out. Start trying to get the tensioner loose and it’s not going in the direction everyone says it does. Double check again and try in the same direction and the bolt on the idler pulley comes loose. All of a sudden I notice what I thought was part of the bolt is a stack of washers....