We have a baby 15 mths and 5, 4 so group 1 maxi cosi ffacing and two highback group 2 britax seats but have to risk loosing my hand everytime I strap the two older children as they are so tight that they can't do them and it takes me ages to jiggle them across - please let me know if you have overcome this prob with 'space' in the back to do this with some ease...? Thanks