Hi, as above, my drive belt is starting to squeal more and more and I've just noticed a fair bit of alloy type shavings in the engine bay concentrated in that area. I'm assuming it will be either a failing tensioner, pulley wheel or the alternator etc itself. I can't see anything visibly to determine what it is and the belt runs true. Before I dig any deeper is there one component that's more commonly known to cause this? I did briefly slacken off the belt to try the alternator pulley and that felt ok, not seized and no play in it. I was thinking the tensioner failing would cause the belt to slip but could it account for the metal shavings?