Hi,
I had already had my marathon installed and then I had to take it out so we could fit a large Christmas Present in my trailblazer... When I tried to re-install it (I have to use the side and seat belt as it does not had LATCH) it seems to not be in tight enough... ?If I push it back and forth in the back it moves-dramatically. ?I am at a loss as there is no where close that can check it, my husband is away, and the place that could check it isn't checking their seats till the end of the month... ?Ughhh?
Re: Britax Marathon help... install
I didn't watch mine being stalled, but I remember this from the snugride:
get in the car and kneel on the carseat. Put all your weight on it to push it further into the seat and simultaneously pull the seat belt (latch etc.) as tight as you can. I never thought I'd be able to get mine tight enough, but doing this really helped. GL.