So I bought an 06 Commander with 56,000 miles. Shortly after buying I notice a front end chatter which occurs when vehicle is first started and then I back out of the drive way and turn. It's the same chatter sound you get when in 4WL. Now it's getting worse. Generally when the vehicle is up to operating temperature the chatter goes away. I replaced the front diff oil with mobile one and an additive as recommended by the manual. The chatter is still there. Is it possible the cv drive axles are bad or can it be that the diff needs rebuilt? Any Ideas? Thanks.