I'm not sure if this has been mentioned or not, but while on the FE map, if you lose the story line for whatever reason and have completed the Botuku province, it will give the option to scout Kalabuye or Bisorba. Make sure you scout Kalabuye before you scout Bisorba, unless directed otherwise. In one of my worlds (in Indy), after losing the story quest (and after aborting several recurring quests trying to get it back), I scouted Bisorba first. I immediately got the story quest back, however it directed me to (eventually) completely take Bisorba and scout the province below it, thereby completely ignoring the Kalabuye province. Once I realized what it was doing, I completely negotiated Kalabuye, but it didn't matter. I lost out on the 3 Hover Tanks. FWIW, I completely negotiated Agadar as well. I did get the 1 Hover Tank and the rest of the FE troops.