does it rattle when at idle??.... i discovered rattle from a brake rotor once for another guy on the trail...danI started up the sled today, 05 mxzx 600sdi, idles normally, but when you give it some gas and get the track spinning I get a rattling sound. Like a baby rattle. Seems to be coming from the front (drivers). It's a new sound and it's not a clicking like I would get from track clips. Do I dare ask for some opinions on what it might be?