Toe in? That's your problem. Brakes need to be toed out. That is, the brake block should encounter the rim at its end, not its front (with respect to the direction of travel). Then the brake block will progressively plant on the rim from rear to front as pressure is applied. Toed in, the brakes will squeal every time. I just set the brakes on my mountain bike last night after changing the tires. Re-mounting the wheel put them out of adjustment and they were singing like crazy. A little tweak to toe 'em out solved the problem. Don't lubricate your rims unless you want to keep going when you apply the brakes. Remember, you are looking for the "sweet spot" as far as toe out and clearance is concerned. Don't believe me? Give it a try and see for yourself.

Cheers

Charles

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"If it's worth doing, it's worth doing poorley..."