I honestly have never tried to edit quest state with a saved game editor, but I'd imagine it is pretty easy, should mostly be a matter of changing a number somewhere. Hardest part is probably figuring out what to change, but checking the module files for that quest should find it fairly easily. I'd imagine you could find some past post on the forums on this, I mean messing with quest state has to be something people do fairly often. Anyway, sent you the vanilla travel speeds source file over email a couple hours ago, happy conquests!