The temperature is warmer the closer you get to the heating unit.
I have a 9200 Little Giant and use an auto egg turner with it.
I set my thermometer on a small cardboard jewelry gift box in the middle of the bator. This raised the thermometer to about even with the middle to top of the eggs and I get a better reading.
If your thermometer is on the wire mesh, you are probaby within the correct temp range.
I have successfully hatched several clutches of chick and one hatch of turkey eggs.
Have another batch of turkey eggs in the bator right now and have posted a thread for advice4 on those wild rescued eggs.