GOOD MORNING, Prices opened on a mixed note overnight, higher beans and wheat, lower corn.  Weather is wide open for harvest.  Soyoil futures opened lower vs. meal, and the EPA did not publish any biofuel mandate guidance as rumored last Friday.   Beans continue to have a bid currently, as there is simply more chatter that China has been in the market actively purchasing despite a lack of export sales last week.   The big event of the week will be the Sep. Quarterly Stocks report due out on Thursday, and expect more position - squaring into the numbers.  Here are the average advertised guesses for Sep. 1 stocks:  beans:  0.174 bln bu corn:  1.153 bln bu wheat:  1.855 bln bu Outsid...