I have three switches, each one being used for both home and limit. I had them all set up to be always closed. They are all lit up on the diagnostics page and when I press them, they all turn off. When I tried to home the machine, I get the error, "The requested home axis home switch is active." Okay, no problem, I rewire all the switches to be always open. They show as open in Mach3 diagnostics and then correctly show as closed when I press them. Now, the machine will try to home, but when it does (Z-axis first), it doesn't stop and I need to hit the emergency button. What am I doing wrong?