I have a Thermopride WC-27 wood/coal furnace.It also is connected to a Thermopride fuel oil furnace. The damper motor on the side of wood/coal furnace(Honeywell M836) is not working.Was replaced about 10-12 years ago.Do these motors go out quite often?I know they are pricey.Are they hard to install?Is it an option to use the furnace without this working?Also, was thinking of different options to replace this furnace.That is why i am wondering about sticking more $ into it?Getting tired of cutting wood,coal is not an option,and fuel oil for this old farm house costs a fortune!