Is it possible to disable a specific key in OSX? It appears my left shift key is permanently down on my MBP. All keys trigger capital letters, and numbers print out the symbols, I have to hold down esc when booting to prevent it from booting into safe mode...

I have taken the key off and cleaned underneath but that hasn't helped matters. If I open the visual keyboard I can see that the right shift responds to my presses but the left one does not, which leads me to think it is the one that is bust.

Is there any way for me to disable this key? I can make do with just using the right hand shift, obviously the laptop is practically un-usable with shift always being on...
The only way I am aware of doing this is by using a program which used to be called KeyRemap4MacBook but is now called Karabiner.

Download here: https://pqrs.org/osx/karabiner/

If you would like a walk through, go here: https://www.quora.com/How-does-one-turn-off-their-shift-key-on-a-MacBook-Pro