General Comments Wheat, corn and soybean marketers were all very firm in the evening session and held most of those gains until prices started to falter around mid-morning. Corn and soybean futures traded back up to almost exactly the same technical resistance levels very early this morning, but couldn't penetrate them and gradually started to slide backwards after that. There were more rumors of China buying U.S. soybeans overnight, but none were announced by USDA. The Pro Farmer crop tour will release their overall results after today's close, and that little bit of uncertainty on a Friday might have been enough to keep buyers cautious. Options on September futures contracts also expired today, and that sometimes plays a role in how ma...