For some reason last night my PRS Alpha wouldn't run correctly when I did a C3 command. I've tried all day but to no avail. Maybe getting old has something to do with it. My proximity switches all light up and when I put a metal piece next to them they turn off but the carriage still goes by them. I cant get the first step of the C3 command to work other than to pass the proximity switch and then stop at the safety block which then drops the Z axis and turns off. It seems to me the switches are turned off? Can someone tell me if its possible and if so how do I turn them on? I don't think its possible but I thought Id ask. Thanks in advance!