A pushchair (brand and store withheld etc). The brake pedals stick out further than the back wheels so you can't roll it up and down steps. The pedals catch on the step and scrape up the risers, damaging the pedals and putting the brake on. There's nothing wrong with it, just a poor design. I called the manufacturer and the store and the response was the same - basically, that's just the way it is and you're not supposed to pull it up and down stairs.
Well . . . sorry but how else am I going to move it? I'm in an apartment block with 3 steps at the front door. The shop suggested that I should fold it up and only unfold it when I'm on the flat. Now that's just physically impossible, I can carry the pushchair and my 4 month old to the door and down the steps okay, but how the chuffing hell do I unclip its catches (one each side) and pull it upright while holding the baby? And then what do I do when I come across a couple of steps when I'm out and about? I know this isn't a problem with all pushchairs as I used to have a different brand, so I was really surprised that such a well-known and long established company hadn't thought it would be a problem. But it seems I am stuck with it. Advice, folks?