PORTLAND (AP - The be leaguered Casco Bay Lines haf new trouble today — a laboidisputeA spokesman said the skippei of one ferry and another mat were fired for failing to repor loss of a mailbag from the ferry Emits II Wednesday.As s result, the skipper of an ether ferry and his deckhanr walked ashore The morning rur to Bailey Island had to be can celled. So did Portland - Peak? Island runs of the car ferryBerkely.The dispute came on the heel of a Public Utilities Commissior order that unless CBL starts a wharf repair program by Aug 14 the Commission will considei state operation of the femes.Manager In BostonThere was no comment avail sble from Peter T .McLaughlin CBL s vice president and gener sl manager Shortly after the la bor dispute broke out. he left for Boston to confer with President Norman ThomasMcLaughlin's assistant, .Tohn AJohnson, said he fired ('apt Wil liam Taylor of the KmiLi and Ilolietr Hicekr, a spare captain, for not reporting the loss of Hama i I( apt. Donald A. Work, skipper of the Aucocisco II. and deck* hand Gerald Davis walked ashore, orotesting what they caclled unfair treatment of Taylor andWmm.Johnson said someone apparently kicked the mailbag into the sea off Long Island. He said both Taylor and Ricker knew about it.The pouch was found afloat and turned over to postal authoritiesThe PUC gave CBL, or a successor, 12 days to begin a suitable repair program to wharves the commission considers unsafeGov. Reed backed up the PUC ruling with assurances that hewould call a special legislative iession to provide the funds for the state taking o\e- the serviceThe PUC said if a program of(Continued nn Page 1 wo) j