J.J.
You should be able to get pretty much any seat to fit, sometimes it just takes someone with more experience to give you some tips. I use the car seat check at Plano Presby. They'll fit it for free and make sure it is safe. You don't have to have any association with the hospital. I think the other Presby system hospials do it too. Just call their general info line and they can get you scheduled. Or call your local firestation and see if they will do it. I have been back 4 times with various seats and two differnt children, and they ALWAYS manage to get my seat safer and tigher than I did! It's kind of embarrassing, but hey - whatever makes my kids safer. They don't mind at all.