Cannot fit the TWE in new car!

[brachy]

Eeek, we bought a new car last week and since then, I've struggled almost daily to fit and re-fit the TWE in. It wobbles, feels unstable, is too upright, is too laid back etc it just doesn't feel as secure as it did in our old car. I've tried it behind the passenger seat, my seat, in the middle, though this doesn't work as he then fights with his sister...

Longshot here...do you have a TWE rear facing in a Tiguan? If so, how have you got it installed? We don't live anywhere near a car place to get it checked.

I'm a little loathed to buy DS a new seat as he is 2yr 9ms now.

Any ideas before I just put him in the Evolva forward facing?

Thanks.

Have you rang in car safety centre road officers in Essex? Alternatively look at rear facing the way forward facebook page and maybe post some pics.

whereabouts are you brachy?
i'm not an official car seat fitter, but have put our TWE into various diff cars and would be happy to have a look at it for you if you happen to be in the south east!