Missing axis sensor metal actuator...any suggestions?

[Sensisnow]

I just received my Creator Pro yesterday. When I attempted to level the bed, the extruder carriage moved to the rear-right, began clicking, and would not stop until I killed the power or cancelled the print job. After a bit of troubleshooting I noticed that the axis sensor was missing the piece of metal that actuates the switch, which was present on the other sensors. Does anyone know what I might be able to use while I wait for a new sensor to arrive?

The sensor in question


A Normal Sensor


This is my first 3D printer, so I'm really exited to get it running, but this missing piece of metal is the only thing holding me back right now. Any suggestions would be greatly appreciated!