I drive a ford focus sedan and theres this platform between the back seats the the rear window. Whenever a loud bass note hits this platform moves up and down and slaps against the window. Its loud and sounds like my subs are blown or clipping or something and EVERYONE asks me whats making that noise. How can i fix this ??? iv'e tried stuffing t-shirts in between the window and platform and stuff but it doesnt help... And it cant be removed..
