I have a John Deere 790, which I recently purchased, and yesterday a bad person tried to start it without the key and damaged the ignition/key slot so that I can't insert my key to start it. The entire mechanism now seems loose as though maybe he tried to take it apart/out or ??? How do I remedy this? (I'm an older woman and this is my first tractor, so I know next to nothing about them, so please be specific) Is this something I can deal with myself? Since I can't start it I can't take it anywhere .