Temp Diffential on Thermostat

[golf_bears]

My furnace cycles back on too soon once it reaches the set temperature. I suspect the temperature differential between "off then back on" is set to a minimum. I thought I read someplace on this forum that the temperature differential of the thermostat could be increased to minimize the cycling.

If so, does anyone know how to accomplish the resetting of the thermostat differential?

I have the Duo-Therm thermostat will multiple zones.

Thanks for your help.