Chicopee (Mass.) Contributory Retirement System is searching for an active domestic small-cap growth equity manager to run $6 million, said Kevin Leonard of consultant Segal Advisors. The board of the $107 million pension fund will probably make a selection early in the first quarter. Officials decided to conduct the search because of organizational changes at the existing management firm, which Mr. Leonard would not identify. Susana Baltazar, executive director of the fund, was unavailable by press time for comment.