We inherited a Miele integrated dishwasher from the previous owner of our house. It's been playing up and we're on the verge of ordering a new one, but want to pull it out and check the hoses at the back first. Trouble is, we can't get it out. We've unscrewed the 4 screws just inside the door frame, so it's no longer attached at the side. We've also unscrewed the front two legs, so it's tipping forwards a little. We can wobble it a little, but can't seem to pull it forward. It's not obvious that anything is holding it in place, though part of the problem may be that there's nothing to get hold of to pull it, other than the door. What are we missing?