I was happy, if a bit dubious, to read Matt Parkhouse's article in the latest ON, in which he says that the infamous unleaded gas valve seat recession issues are mostly a pre-1984 issue. I thought the 84s were equally affected? As the owner of an 84 (no issues so far, but I keep a watch on it) I'd love to think this is true but it's not what I've always understood. Thanks - B