Hun, I thought the same with DS1 awhile ago, but I took it to a VicRoads approved fitting station, and they adjusted the seat so it was safer for him (in a way I didn't realise could be done). He should now be fine in it for many more months, which is good, as I'm under the impression that it's best to leave them in their current car seat until they are as close as possible to the weight limit (as long as that's practical ie. don't need the seat for another child etc). So I have the Maxi Rider ready to go, but won't start using it just yet.