GOOD MORNING,   Welcome to what appears to be grains and soy attempting to fulfill a "turn-around Tuesday" mission after they reached contract lows in many cases.  Corn did post another new contract low this morning even as prices near major benchmarks.  Poor ethanol margins, and improved competition from South America could hurt corn exports moving forward, as prices trend lower.  Beans have been beaten up the worst in its affiliation with the Chinese stock market and lack of buying interest/exports. South American currency weakness continues to allow farmers to hedge their crop at a more advantageous exchange rate, and they are selling well ahead of a year ago.  Yesterday, the relationship between the US dol...