Looks like you have been learning a few things--this is really good. The still air does run differently than the fan LG. The temp closer to the top will be higher and the temp on the mesh floor is the coldest. THe goal is a temp of 102 (hen temp) on top of the eggs or 99 at 1"(or what ever is half the height of the eggs or on the turner). LG instruction blloklet clearly states 102 on top of the eggs. Eggs with different heights pose a problem I have found. Smaller eggs develop slower because they are actually incubating at a lower temp. SO I added a fan to change that.Well I think it has to do with positioning and humidity. The first hatch I did after the first chick hatched my therm fell from on top of the eggs to the grate and the temp went from 99 to 93. I was worried the temp was too low so I increased it. This time I used a turner and also tried dry incubation. So I dropped the level of the eggs and tried with egg cartons to get the height right but was not successful. So I had to increase the temp. I also finally had a huge increase in humdity too. I am worried about shrink wrap this time with the dry incubation approach. Tpday is haych day. I did not add water the whole time before lockdown. If this is a bad hatch I think I will try to keep my uumidity around 30 during incubation. I also use a still air lg if that makes a difference in the whole temp discussion.
I usually keep an eye on the RH even if I don't add any water. RH can fluctuate; if it stays below 20 I add a little water. I also think the number of eggs , a few v full also effects the drying.