I installed a pellet stove to supplement my propane furnace. Even though I run the furnace fan constantly to circulate the warm air generated by the pellet stove, the bedrooms are all about 10 degrees cooler. My initial thought was I just need more air circulation. The really odd thing is that when I set the furnace to run off of a thermostat in the cooler bedroom, it struggles to warm it up even a little. I get warnings on my Nest thermostat that the system is running too much. If I turn the pellet stove off, the propane furnace heats the whole house without issue. Thoughts? Suggestions?