I recently developed a squeak from the front brakes. It's a high pitch squeak or squeal that stops when brakes are applied and starts again. I first noticed it five miles into my ten mile drive home from work last week and its still there. I searched and learned it may be dust build up, shoes needing sanding or other things but i don't know what to look for. After some snow melts, I plan to take off drums to inspect and clean but would like to know if there is any tell tale signs to look for. Thanks, Brian