the generator,the tube that crosses the burner,gets clogged with whatever is added to gas these days.my thought about my "old" stove is that it was made to burn "old" gas and the tubing was made larger to allow for that.also i noticed that the burners have two small,sort of tiny,burners built into the sides of them which i assume were put there to help raise the temp inside the generator and burn off all the gas.