Hi guys, We have the Cybex Aton isofix base which uses a support leg. We have a Renault Scenic which is one of the family cars that some genius put useless storage boxes into meaning you can't use child seats with support legs.. Anywho, I emailed Renault to confirm their stance on filling the storage with polystyrene as i'd seen suggested by a few other companies and they have said that their latest advice is that you CAN use the support leg on the storage box lid and that Britax and Maxi Cosi had confirmed this with them. I'm confused - I thought it was a big no no and now apparently it's fine? Does anyone have any up to date advice on this? Driving me nuts.. Baby will be with me in the front at this rate and parter will be demoted to the back!!