imported post
Had the same problem. Not only does the screw have to be snug but there's a small nipple on the other side which fits into an indentation in the caliper. And at the top of the cover is a rolled portion which fits into a semi-slotted portion on the caliper. If all three points don't make solid contact then you'll hear the noise. The whole thing also has to be centered over the rotor so that it doesn't scrape.
Had the same problem. Not only does the screw have to be snug but there's a small nipple on the other side which fits into an indentation in the caliper. And at the top of the cover is a rolled portion which fits into a semi-slotted portion on the caliper. If all three points don't make solid contact then you'll hear the noise. The whole thing also has to be centered over the rotor so that it doesn't scrape.