Used some painters tape...marked the size to expand the hole just about 3/4 inch...and the new cooktop just drops in...easy peassy....I think I will lift it back off and use some double sided foam tape. The true induction just came with one sided foam tape.
love the new look...no exposed knobs...have not had a chance to use it yet, have great expectations!! I will report back on its functionality....I think I will still use the corian cover to help protect the cook top..