The rear seats in my TCH seem to have unnecessarily large openings for the seat belt holders (the part with the button to release the buckle) to pass through. I'd have never noticed except that my kids have managed to lose three GameBoy Advance game cartridges through them. After tipping the fold-down seats part way and doing some contortions, I was able to grab one of them by sliding a PC "parts grabber" in the gap between the seat-back and the seat. I can't reach the other two. Is there any easy way to remove the rear seats to get in to the cavity underneath?