Changes Announced In Senior Puck Dates^ FORT WILLIAM, March 11. — Frank Sargent, second vice-president of the Canadian Amateur flock :y association, has announced Ma n itoba-Th under Bay senior playoffs will not take place until March 15 or 16 in Port Arthur instead of March 13 s previously scheduled. Length of the Gerald-ton-Port Arthur series necessitated the change of dates.i Sargent said George Dudley ot .Midland, Ont., first vice-president, I in charge of Eastern playdowns,has announced necessary changesjlt;in his schedule which will give the «t West throe or four extra dnvs to%declare a winner.