Hi I'm trying to improve the look of my 280 "cockpit" . It isn't too bad but there are a couple of areas that could be better. These are all the same material which is a soft plastic leather look black material that covers the arm rest, transmission tunnel console, dashboard and parcel shelf. It looks grubby like it has dirt ingrained in it. Dash Flash has worked fine on hard black plastic parts like the sill trims and the trim immediately behind the headrests. (I should post some photos shouldn't I?) but it won't improve this softer material. Has anyone got a favourite product for this?