I bought a 10qt Fagor Duo pressure cooker. The first gasket split after three uses, but they replaced it immediately without question or charge of any kind -- very nice. But I still have a problem. No matter what I do, the gasket and the lid have a slight rubbery smell. Whatever I make in the cooker takes on a very, very faint trace of this smell. It's so slight that my wife doesn't notice it in the food, but I notice it every time -- of course, I'm primed to do so, because when I remove the lid the smell is strongest. I have noticed that there is some black carbon or something around the bolt thing where the pressure knob comes through on the inside of the lid. Again, nothing seems to remove it -- I can get some off by wiping with a dry cloth, but no matter how much I wipe, the thing remains black. My suspicion is that what it wants is a wash, but the washing I'm doing isn't working. Anyone ever have this problem? Anyone have a solution or suggestion? Thanks!