Grain futures may still be stuck in the loop of starting on the defensive after closing weaker the previous Friday, which is how the last several weeks of have went. More of the strong grain export data could help spark an upside turnaround for prices if there is also support from the outside markets. Traders in all markets will have this as the last full week to adjust positions ahead of the election. In the Headlines December corn futures gained 10 1/2 cents last week. November beans rebounded by 17 3/4 cents. December Chicago wheat futures lost 3 3/4 cents and Dec KC wheat futures fell 8 3/4. December live cattle were up $1.82 while November feeders finished the week higher by 97 cents. December lean hogs held positive by $1.85. U.S. harvest pressure and better weather shaping up in Brazil are the dominant negative factors for grain futures again at the start of the week, but last week showed that buyers can surface if they have motivation on the demand side. Last week featured flash export sales on all five mornings. While daily sales announcements should be expected regularly at this time of the year, the totals are stacking…