Serpentine Belt question

[ylw95gts]

Anyone running aluminum underdrive pulleys and getting alot of silvering on their belt? It just doesn't seem right :dunno:.

 

[Lightning Struck]

Ive got alum pulleys and just had to buy a new belt, the one I had got shredded........don't know why

 

[ylw95gts]

It almost seems like mine has too much tension on it and is taking the aluminum right off the water pump pulley. This is my 3rd belt