How do you guys control the humidity level in you homes when burning FPX 36 and 44 fireplaces and pulling in dry outside air? My 44 is set up to heat outside air and I have a humidifier on my geothermal forced air system. I am going to change the humidifier to run when only the fan is on the geothermal is running, this should help. I am thinking about changing the 44 to pull a mix of outside air and air from my basement. Any thoughts?