I noticed this morning that my 2001 DII's right rear was sagging noticeably after being parked on a level ground. After I drove the car to work (15 miles) and parked, it was back to normal, but when I checked the car during lunch hour it was sagging again. I remember reading some post from the old archive about SLS going bad (though I'm having little luck searching the archive). Does this sound like the symptom for a faulty SLS? Is there an easy fix? Thanks in advance.