OK--first off, my front brakes are pin-type, large diameter. Today, I paid extra attention to the noise. It still does the noise when applying the brakes. And, despite anything I've said earlier, the sound seems to be inside the car, even though it can be heard outside the car. I'm going to break things down this weekend and see if I can get to the bottom of this. It's driving me nuts! I'll report on anything I find. Thanks for all the ideas.
