just got an orion 12 xtr pro..installed it in my 5th gen prelude...but theres this annnooyyying rattling coming from somwhere in my trunk. It actually sounds like its coming from the gas tank or underneath my car...but when i open my trunk lid it goes away. Even when i almost close the trunk, the rattling starts again. I put RAAMmat all over my trunk and theres still rattling! anyone have any ideas?! thanks