I need to get a gate for the top of the stairs, and I'm a bit confused as to how they all work. I'd ideally like a 'no trip' one, because the floor bar on my sister's gate terrifies me every time I step over it. However, the gap I need to span is 5 cm wider at the top than at the bottom. Is it possible to get a gate without a bar that can still cope with a variable span?? I was looking at the BabyDan No Trip wooden gate on the internet, but can't work out whether it would work or not. Also, are the wall-mounted ones a nightmare to screw to the wall, and would I be better off going for a pressure one after all? Any info/advice very welcome!!