This is my first time incubating eggs. The incubator I borrowed is very large. Fan and heater in the top of it and it has two trays that turn eggs side to side. The temp gauge is at the top in the same area as the heater, fan and water. It reads 99-100*. I bought a new combo temp/hygrometer and placed it at egg level and at that point the temp reads 89*. First question = should the egg level temp be at 99.5. Or do I risk too high heat by changing it. Second issue = eggs have been in bator for 7 days. I am having problem with too much humidity. I have changed the size of water bowl several times and today, it is down to a coffee cup. The humidity has been 70-80%. Any suggestions?