Not to worry: work on the high-tech concert hall for the New World Symphony is proceeding on time and on budget. But, with the scheme well underway, the city of Miami Beach is now balking at the cost of the adjacent 2½-acre park – and at Gehry’s fee for it. So the architect has withdrawn from the park component and is threatening “to walk away from the [entire] project completely if city commissioners continue to harp on his fees, which he says they have exaggerated and misrepresented.”