I am currently trying to figure out why my print head is crashing into my bed. Giving me "Probing Error" From my searches, the issue is the IR sensor. I can place my hand close to the IR sensor the red light does come on. I can reset the Z-offset and reset the bed calibration the red light comes on. While using the fine tune z-offset wizard or start a print the bed and print head crash on the first point (front left side of the bed) each time it crashes (I reset the connection as requested.) I have cleaned the IR sensor/area. I have checked all the connections. I have tried to start a print in Low light, No light. Bright light (I have stuck LEDs around the inside of the printer so my print bed shows up in the webcam.) NOTE: The LEDs have been in there for about a week before this problem started. Not sure what to do now. I don't think Robo will send me a new IR sensor. (I have seen people report they received a new sensor) I'm sure my warranty is over. Is there a way to bypass/disable the calibration before a print so I don't have a dead printer? Should I get a new BuildTek? Would roughing up the BuildTek with 2k grit sandpaper help?