I had my adjustable MM drag race LCA's installed by a mustang shop. I have noticed that now when i am in the middle of a tight turn (parking lot) and at slow speeds, something in the rear end is rattling/clunking. It almost sounds like the jack is rolling around in the trunk clunking with the sides of the trunk. But its not that, because i have nothing in my trunk not even the spare. Is it normal for this sound with aftermarket LCA's, or is it something i should have checked out?