I haven't had a problem with gas line on the burners breaking off, but I have on the oven. That's an experience when it lights. I don't know if movement caused it, or what, but we tend to use our oven for food storage, like bread, buns, etc. It's also possible we shoved a cookie sheet in the very bottom of the oven for storage and that somehow dislodged the gas line. In any event, you need a flaring tool to reconnect the line (don't forget to put the fitting on the line before you flare it), if you have enough of the old line available...I did. We're more careful now...nothing below the deflector.