i have a 'on the move' costatto highchair. I have had it for over 4 years now, using it for my second child now, i love the chair as its strong and folds flat, only problem now is that the seat cushions are now very tatty and baby has ripped them and pulling chunks of foam out of them!!! does anyone know of anywhere that sells just the seat cushions (covers)? have looked everywhere and i dont think its really worth buying a new highchair. thanks