Hello. I need to replace the speakers in the doors of my Diablo. I have found two nuts in the front under the cover and two in the back. The diagram shows one in the middle plus one connecting the armrest with the front part. I can reach my hand in from the front far enough to feel the one connecting the two half's but cannot feel the other one supposedly connecting the middle to the door. How in the heck does a person get the panel off to replace the speakers??