If a door gasket is compressed enough in some spot that the door doesn't press a piece of paper tightly against the body, (allowing air in through a gap between them, don't think that that makes it necessary to replace the gasket (the asbestos rope). Do what I did yesterday, reshape the gasket with a pair of pliers. Squeeze in the overly flattened area every quarter inch.
If your stove is older and well used, check the door-latch rod to see if it's worn down. Mine is worn down perhaps 1/8th inch so the door wouldn't close tightly until I wound a thick wire around it. But there was still one area where a mail-in magazine subscription card was real loose. So I reshaped the gasket in that spot and afterward it gripped the paper card pretty firmly.
If your stove is older and well used, check the door-latch rod to see if it's worn down. Mine is worn down perhaps 1/8th inch so the door wouldn't close tightly until I wound a thick wire around it. But there was still one area where a mail-in magazine subscription card was real loose. So I reshaped the gasket in that spot and afterward it gripped the paper card pretty firmly.