Good day friends There is a loss of gas apparently near the emege heater It seems that the key does not cut well and the internal connection should be disassembled to see if there is any loose joint The question is if the key has repair or change and as it is called as it seems from the first old and simple, send photo the second question is how the heater is disassembled is about a width = 310 mm approx, it has no balanced shot