  He's right insofar as you don't HAVE TO change it, you don't have to do interim services either, but it helps maintain your asset as best as possible. So I would be thanking him for his input, but insisting he do what he's told.  He's right insofar as you don't HAVE TO change it, you don't have to do interim services either, but it helps maintain your asset as best as possible. So I would be thanking him for his input, but insisting he do what he's told.  