I have a 1985 Coleman 508 stove, the one with the two levers, and I'm having some problems with the generator. It used to dribble a little bit of fuel occasionally when moving between high and clean. Now it really is leaking fuel. It doesn't leak fuel from the black lever, but rather from where the generator should be plugged into the stove? I can see the output nozzle of the generator and there’s nothing connected to it. Is it normal to see that part or am I missing something that needs to connect the two? The last picture is a demonstration of how the generator is “connected” when the stove is assembled. And if that is how the generator is supposed to be, how would I go about cleaning the generator and the high, low, clean valve?