While there could be some profit taking by traders with long positions going into the weekend, the prospect that USDA could further increase its U.S. corn export estimate in Monday's WASDE is probably enough to constrain aggressive selling prior to that report being released. General Comments Corn, wheat and the soy complex all steadily moved higher today. As this was occurring, someone commented that there really is no justification for corn to move to present levels when ample stocks are still available. However, because ample stocks exist does not mean that they are available. Farmers are often reluctant sellers during a rally as the intent is to sell at the high. Intending to do that and actually accomplishing the objective are two di...