DD is 4yrs 42lbs and about 41in. We recently got her a Secure Kid 400. Overall I like the seat, however, DD is slumping her head down(chin on chest) when she sleeps. DH thought she just has to get used to the seat and does not want me back to another car seat hunt. I don't see it getting better. Is this a problem for others with this seat? Is it unsafe or somehow bad for her to sleep in her seat in that position? It seems like it would cause pain, but I can't tell since she cries regardless when I have to remove her after falling asleep. I'm unsure what good the head wings do if she is not in them. Any seat suggestions for a sleeper preferably under $200 should I go back to the hunt?