My Sportsman came pre-set at 100 degrees and I have not messed with it.
I have a Welsummer pullet and 2 cockerels I have been hanging onto because the boys are quite passive and have had their tails removed twice by more dominant males (they are no longer housed with), so I didn't really feel I could sell them with no tails. If you would like them, I will sell the 3 for $30. They hatched in early March, so are almost 4 months old.
I put 5 Mottled Houdan and 5 Silver Duckwing Leghorn eggs into the hatcher last Wednesday, 1 LH hatched, 1 tried and died halfway through zipping and seemed large for its shell, the others never even internally pipped, and all that went into the hatcher had developed (5 of 9 MH, 5 of 16 LH). Very disappointed. Of my Silkie eggs, 4 of 6 hatched, they were laid here, and the ones that didn't look like they died immediately after transfer to the hatcher. I am mulling over trying half the next group in the hatching tray of the Sportsman, so no change in atmosphere or humidity, to see what happens.