I've used a Little Giant several times. The first time I had only two eggs and one hatched. The second time I had five eggs and one hatched, one pipped, but didn't break out. This year I ordered eggs online and tried once and had a full incubator and didn't get any to hatch. My humidity must have been too high. I ordered more eggs and moved my incubator to a different location and had two hatch. I am a classroom teacher and am new to this, but the trouble I had was trying to get the temperature and humidity regulated. I had several different thermometers and none of them were the same. The temperature in the incubator kept spiking on me. The school building that I was incubating eggs in temperature fluctuated quite a bit. The last two batches quite a few eggs would move but they never pipped. I'm not sure what happened, but I know it just about breaks your heart. I just got a new incubator a Suro and I am trying nine eggs in that. This is day 6. I don't know if any of that information helps you or not. There are a lot of people on here more experienced then me for sure.
Tia