I spent a small fortune on my leather sofa but the seat cushions never sit together. The middle one always comes up when someone sits on one of the sides. The sofa company have taken the sofa away and apparently reduced some of the stuffing but it didn’t make any difference. They then sent a technician from Homeserve who came and looked and said it’s fine and they just need plumping. I’ve tried plumping them but it’s the same. Is this normal for leather sofas with seat cushions? Do you need to plump the cushions every day or something? What should I do? I’m so fed up!