What happens if you go from natural gas to propane without changing out the gas jets in your stove? How about vice-versa? The reason I ask is that many years ago I bought a house that had a 6 burner stove. Two burners and a small oven used wood, the other four burners and a larger oven used natural gas. Based on the age of the stove and the fact that the house was built in the 30's when the area was rural (with no access to "manufactured gas"), I suspect that it originally used propane, yet it always worked fine using natural gas. Any thoughts on this?