Would appreciate any advice on two things: Firstly at the top of my stairs I need a stairgate that can be pressure mounted (not using cups) as walls are practically falling down and if you try to drill into them they just crumble away (but that's another story! Have a very old house!). Secondly, at the bottom of the stairs there is a wall on one side and just round banister spindles on the other side. What has anyone else done in this situation? Can you get a stairgate that goes onto a spindle and is this strong enough? Thanks in advance.