A problem with one of your gas stove's burner heads can lead to uneven heating, causing food to burn, stick, or take longer to cook. The most common reason for this is dirty or clogged burner ports or other components. Cleaning the burner caps and caps is a simple one to do. If you find any resistance, find the manual or instructional video to remove them. If the burner heads or caps are dirty or greasy, they should be scrubbed clean with a sponge or toothbrush. Other potential issues include damaged or improperly aligned burner caps, using the wrong type or size of pan, or problems with your stove's gas valve or regulator.