Nos. 96-5208/5332/5411 Argued March 17, 1997. Decided and Filed May 16, 1997 Pursuant to Sixth Circuit Rule 24 Gary A. Chamberlin (briefed), Miller, Johnson, Snell Cumminskey, Grand Rapids, MI, Barry R. Smith (argued and briefed), Miller, Johnson, Snell Cumminskey, Kalamazoo, MI, for Petitioners/Cross-Respondents. Aileen A. Armstrong, Deputy Asso. Gen. Counsel, Peter Winkler (briefed), National Labor Relations Board, Appellate Court Branch, Meredith L. Jason (argued and briefed), National Labor Relations