i just bought an 08 limited f150 and it has a whipple supercharger on it. it has 20k miles on it and i noticed a slight squeel. so upon further investigating it looks like the idler pulley is squeeling. so i looked at the belt and felt it and it feels like its way to tight. i had a lightning and have replaced the belt and i dont remember it being that tight? could a to tight of belt cause the idler pulley to go? and does anyone know how to determine the right tension for it? thanks