My Gas Stove burners(all Four - 9000 BTU), having very low flames and take long time to cook food. It is used to be have very strong flame but from few months experiencing very low flame even though flame control knob are at high. All burner have same capacity 9000 BTU but at high setting every burner have different flame lavel. Is this burner problem or knob problem? is it fixable?
Stove is close to 10-12 year old and Model number is JGBP24BEW1WH.