Need some help with the YW wheat contract trading on TWS with IB. Dunno if this is noobish or not but I can't get out of my long position on eCBOT YW contract. Bid Size and Bid Price fields are empty, If I try and place a short market order I get an error message saying "Invalid Order" Why is it so difficult to get in and out of Wheat trades? Is there just no liquidity at all? I find that hard to believe Am I doing something wrong? Or does IB suck? Thanks for any help.