I finally got hold of my mother´s car - a small Peugeot 207 a couple of days ago just to check on Mathias´s Britax Two Way Elite car seat. Good heavens and DOH, the tether straps were wrong!!!!!!!!!!!!! I took the chance to get to know this seat better. That is how to install it for a larger child. OH BOY am I on top of the install now. There are several ways to install it, but you can´t install it in just any of those ways as you please. It can take awhile to get the seat exactly right in the car until you get the hang of it.
Also I took his Britax Multi-Tech out a few days ago in order to put it front facing just for a couple of photos for someone, who asked for them. I have an easier time with this seat. there is ONE way to install it RF and ONE way to install it FF. SIMPLICY at it´s very best. This is a 3-5 minute job.