GOOD MORNING,  Prices started the PM session mixed to higher but turned lower by the early hours.  A neutral crop progress report and more rainfall over drier portions of the Midwest created a bit of profit-taking at recent market highs.   Traders are beginning to position - square in front of Thursday's June WASDE report, which will be released at 11:00 Chicago time.  Wheat futures weaken as harvest continues in the US, with about 7% of the crop done so far, in line with the five- year average.   WEATHER --Rains move up across the Midwest courtesy of tropical storm Cristobal.  The western Great Lakes region will see heavy rains, while the eastern belt state of Eastern Ill, Ind., and Ohio could mis...