Help! new Britax Kidfix - back won't stay upright, flops forward

[Wingdingdong]

Just bought the Britax Kidfix SICT. Installed according to the instructions, but the back keeps falling forwards - doesn't seem to lock in any upright/reclined position. We had the demo one fitted at the retailers, but not the one we purchased (due to lack of space in the car to transport existing seats with ISOFIX legs!).

What are we doing wrong? We've been through the Britax manual and website and watched their truly crap fitting video. I'll phone them tomorrow but if anyone knows the answer before we have to do the nursery run in the morning, it would be much appreciated.

[lenats31]

There is nothing wrong with it. It is suppossed to do that.All the others do the same.

[MyBootsAreMuddy]

We have a kidfix and it has never flopped forwards in the 3yrs we have had it.

[lenats31]

Do you mean just a little bit or all the way forwards?

[Moonstorm]

Have you pulled the seat base forward? Have you removed the car headrest?