I am totally in love with my baby jogger city elite and sidewalk, however, my 10 month old just doesn't seem to sit right in it. I'm pretty sure it's because the seat back doesn't go fully upright... He is always sliding down in the seat or ending up leaning to one side! I bought a belly bar for him to hold on to, which bless him he tries but can't quite manage it- it's a little too far away from him and he just can't sit up to reach it. So annoying its times like this I so miss my Mutsy 4 rider, he sat up so nicely in it :( Has anyone else experienced this? Does it just get better when they are a bit older? Or is there anything I can do to improve it? Thanks!