I was loking to install some shocks but could not figure out how to get the rear panel (the one behind the seatback) off to access the upper shock mounts. I can get it to slide back and forth about a 1/2 inch but can't remove it. I looked for some sort of clip or lever but didn't see anything. I know ther's gotta be a way to get that panel out but how? The factory manual was of little help as it had no description on how to remove that rear panel that is behind the seat back. Anybody know the trick to gettin it off?