General Comments Today's grain and soy markets had a pre-report feeling about them. Volume was thin, trading ranges were narrow and price movements were choppy. It is as though markets were afraid to trade ahead of Thursday's WASDE. The market consensus is that cuts in South American corn and soybean production and some tightening of U.S. supply/demand balances will give the WASDE a bullish cast. That can explain why no one wants to sell the market ahead of the report, but it does not explain why apparently no one wants to buy it.We cannot recall a day when trading ranges for CME corn, soybeans and wheat were all so narrow. March soybeans traded in a 6.5-cent range; March corn's range was 3.75 cents; and CME March wheat moved in a 5-cent...