Pennsylvania G. 0. P. Reported at Odds on Convention Strategy By A»sociot«d Pr«s» HARRISBURG, Pa., June 12.— Gov. James H. Duff and other top Pennsylvania Republican leaders were reported at odds today over the strategy of the State's potent 73 member delegation to the Repub lican National Convention. John M. Cummings, Philadelphia Inquirer political writer, quoted Mr. Duff as saying he is ready to “fight to the limit any move to undermine his plan to keep the delegation un pledged until convention time. Raymond C. Brecht of the Phila delphia Bulletin said “a smoldering battle between the Governor and Senator Martin has left the secret stage and flared into the open.” Mr. Cummings said Gov. Duff particularly was incensed at reports G. Mason Owlett, Republican na tional committeeman and president of the Pennsylvania Manufacturers’ Association, was trying to line up votes in the delegation for Gov. Dewey of New York. "I was never for him