Picked up my car today C3HDI Exc after having the roof mods carried out a second time - this time with expanding foam in the roof channels now sanctioned by Citroen. Good news - it works - I am absolutely delighted that there are no creaks or rattles from around the tops of the B pillars. I can now hear the rear parcel shelf rattling but this can easily be sorted out by some rubber stops or sticky foam tape. But the bad news is that they creased the headlining at the rear and also stained it presumably after trying to clean off dirty fingermarks, so it will have to go back in for a new headlining. However, this to me is the lesser of two evils. By the way it took 4 days for the job to be carried out. Rob