Buying fuel looks, from a distance, like buying anything else. You ask for a price, you accept one, the product arrives, you pay. In practice, a bunker stem is a sequence of six or seven distinct stages, each generating its own document, and the buyer's leverage in any subsequent dispute is determined almost entirely by what was done, or not done, at the right stage. The uncomfortable truth of most bunker claims is that they were lost before anyone knew there was a problem. T