Hello all, I am new to HD, so I dont know if this is a issue or not. Every now and then when I apply the front brake, I hear a popping noise. Brakes work fine and it doesnt happen all the time. I am pretty sure it is coming from the caliper. Any Ideas what it might be? The first couple of times it happened, I thought I ran over a small rock, it has that kind of sound, but after that, I am only noticing it when I first apply the brake.