As the Chicago Bears continue to face massive hurdles in Springfield over plans to build a domed stadium next to Soldier Field, the team said Monday it has reached an agreement over property taxes for the 326 acres of land it owns in Arlington Heights that has tripped up plans to build a new stadium in the northwest suburb. Team officials said they had agreed on a Memorandum of Understanding involving the amount of taxes to be paid for the former site of the Arlington International Racecourse.