Honestly, the Kithrak leaving really makes no sense. He wants the weapon and thinks our party has it. By leaving and letting his patrol handle it, all he's doing, even if he has no doubt in his mind that his people can take it, is delaying the weapon arriving at its destination. His dragon could kill us within a minute or two, then he could get the weapon and have his moment of presenting it himself. Him leaving doesn't actually gain him anything. He even says that he's flying off to tell the queen that he's located the weapon. Wouldn't it be better if he brought her the weapon so no one has to wait? I'm fine with things in stories not making perfect logical sense, but I can't really find an angle to think about his actions that makes any sense at all.
