I am dumfounded of that comment as well. I used to live in Tucson and a friend of mine purchased a house that has some Knob & Tube and it has some receptacles that are not working and trying to direct him by email and telling him to hire a licensed electrician, but according to my friend, a "very respectable and professional non-licensed electrician" examined the situation and wrote the comment about the switches and the problem in not having those legs ... I DONT KNOW WHAT TO SAY! to my friend, he's a senior with some Alzheimer. This professional want to "fix this problem". I posted here, because with Knob & Tube I don't have too much experience ... maybe he is correct ... Isn't he? I am almost ready to call the authorities there and stop that ..