I've owned both the FR80 and FR85 and NEVER once had head slump with DS1 or DS2. Now I have a FR90 and every time DS2 (4.5 yrs old) falls asleep he has horrible head slump. We've had the red/black model in all three seats but the fabric on the FR90 seems more slippery and DS2's head slips down the second he falls asleep. I have the same car (Mazda5) that I had with all three Frontiers so that hasn't changed. DS2 is using it in hardness mode AND it's in the reclined position. Even if I recline the 2nd row captain's chair 1, 2, or 3 clicks he still has head slump the second he falls asleep. His harness is tight but his head is still completely falling forward and it looks really bad. One of the reasons I've always loved our Frontiers is that we've never had head slump ever. So what's going on? Anyone experiencing the same thing with their FR90???