I had quail for years and their hatch rates were always very high, regardless of the crappy incubator ( LG ) I had at the time and my poor incubating skills at the time. Anyway I guess I am saying that when I didn't know squat they still hatched well.
I have found Quail eggs to be much more fertile and durable than chicken egg's, Your only choice really is just let them go to term and see what happens.