Cheers for the reply. Having trouble finding some, also living in Australia makes it hard.

Hello
I have a samurai sword fighting game called Tsurugi. I am having issues with left and right sensors. When in the settings it says left and right sensors bad, but when you hold the sword sensor on one of them it says ok. My question is, is it the left and right senors that are gone or is it the sword not putting out enough signal? . Is it possible to rebuild the left and right sensors or will i need new ones if i can find them? Any help would be greatly appreciated.  
Cheers
Left and right sensors at top

sensor settings. Note left and right bad

Sword sensor

Holding sword to right sensor

Settings after holding sensor on sensor

Sensor i removed (front and back pic)