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3) As sculpin stated, market crash. Possible but I don't see a major market crash happening or gold slowing down for that matter. There will likely be the odd issue but I expect it to be worked out as everything is on the mend again.
Out of your three risks, this is one (number 3) that I am actually worried about. If your long SLI having a 70/30 on the anomalies is a little confusing to me? Did you word that wrong? Or am I reading it wrong?