Nos. 86-5708, 86-5829. Argued March 19, 1987. Decided June 18, 1987. Richard J. Sable, D'Agostini, McKinnon, Sable, Ruggeri, Sterling Heights, Mich., David Walker (argued), for petitioner, cross respondent. Elliott Moore, Deputy Associate Gen. Counsel, N.L.R.B., Washington, D.C., James M. Darby, Christian Schumann, Corrina Metcalf (argued), Bernard Gottfried, Director, N.L.R.B., Detroit, Mich., for respondent, cross petitioner. Petition for review from the NLRB. Before ENGEL and GUY, Circuit Judges