Space Lion
First time out of the vault

Hello all,
I've recently begun replaying Fallout 2 once more, and now that I've finally got back into the groove of playing the game I realize that through a poor choice of dialogue options, I've shut myself out of the Modoc/Ghost Farm quest line.
I talked to Mayor Jo in Modoc about finding a GECK, which IIRC is supposed to lead into the Ghost Farm plot. Unfortunately, I said something which annoyed him, he told me I had a "chip on my shoulder," and should come back and ask again when it wasn't so large.
But now I can't talk to him about GECKs at all. I don't have a save point before the conversation took place, and I would rather not start a new character just for that.
Is there any other way to initiate the Ghost Farm plot? Can I go in and edit the savegame files otherwise? I don't really know what's possible, but if there's a way I'm all ears.
I've recently begun replaying Fallout 2 once more, and now that I've finally got back into the groove of playing the game I realize that through a poor choice of dialogue options, I've shut myself out of the Modoc/Ghost Farm quest line.
I talked to Mayor Jo in Modoc about finding a GECK, which IIRC is supposed to lead into the Ghost Farm plot. Unfortunately, I said something which annoyed him, he told me I had a "chip on my shoulder," and should come back and ask again when it wasn't so large.
But now I can't talk to him about GECKs at all. I don't have a save point before the conversation took place, and I would rather not start a new character just for that.
Is there any other way to initiate the Ghost Farm plot? Can I go in and edit the savegame files otherwise? I don't really know what's possible, but if there's a way I'm all ears.