We have stairs on 4 levels with huge steep drops and ideally need 6 stairgates but could manage for now with 3. They have to be on the stairs - blocking in rooms isn't the right solution for us because he is getting really bored being shut in one room (usually the kitchen with me) and i want him to have the run of a floor. The problem is the gaps between wall and staircase spindles are about 112cm long. The staircase is a wide wooden spiral with a wall on one side and square metal newal posts / spindles on the other about 2cm wide. There is a curved wooden spiral bannister which we'd prefer not to drill into, but we really don't care at this point. The bannister is quite shaky and not ideal to drill into - it would be better to drill posts into the floor if we have to. The steps are wide at one side, narrow at the other and they are not level. They slope as the house is 200yrs old and has shifted. We have tried fitting a pressure autoclose bettagate with 2 extensions, from safetots and spent ages with the manufacturer on the phone but couldn't get it to work without drilling into secure posts which we didn't try as we didn't realise this at that point. Also, the stairgate door doesn't close properly. We tried to send it back to safetots but they said the metal was cracked on one part and the extensions were bent so they wouldn't refund the 80.00 it cost us incl return postage. Eventually we got the gate back. Did find a small crack - not sure how / when this happened. Couldn't see the bent extensions. Door still not closing. We have had such an expensive & ineffective nightmare with the bought stairgate that i'm very nervous about that kind of solution Have also called 6 joiners re a custom solution. 2 haven't returned calls. 1 keeps promising to get back to us but as he also needs to to mend the holes in the wall he left last time he was here we don't expect much, one decided he didn't want the job in case anything went wrong with his solution, one wanted 400.00 for 3 gates and i didn't have much confidence in him and we are still waiting for a quote from another. This is my biggest problem at the moment as DS learnt to walk recently and makes a beeline for the stairs. He also fell halfway down the stairs recently at grannies but that hasn't put him off. Any stairgate has to be super-strong as DS is a born shaker.