I did that to our thermostat when we 1st bought the camper. It did help but that thermo is such a pain to use that we decided to buy the Lux digital ($25).
The Lux digital looks much nicer, it's easier to read and use and it is far more accurate. IMO.....good investment. You can even get a Lux progamable. It looks basically the same but you can program it so that the temp is lower while you're sleeping and automatically turn on/off at a certain time, which would conserve propane and electric. ($40)
