No. 92-3245. Argued April 12, 1993. Decided September 1, 1993. Rehearing Denied October 25, 1993. Michael T. Mullen, John C. Mullen, Christopher Mullen, Mary R. Minella (argued), Cynthia L. Chase, Mullen Minella, Chicago, IL, for plaintiffs-appellants. Shelmerdeane A. Miller, Michael Parker, Sheila M. Devane (argued), John R. Fearon, Bergin Associates, Chicago, IL, for defendants-appellees. Appeal from the United States District Court for the Northern District of Illinois. Before BAUER, Chief Judge