The Amado water key on the 3rd valve slide dump will look pretty clunky. You could send just the slide to Kanstul and get a more stock looking standard water key installed. I ordered mine with one in 1979 and it still works and looks fine. MDQ has a very good rep on this forum and he is local. You may want to consider the total enhancements offered by Flip Oakes or Osmun Music to get the most out of your horn as well. Hopefully you will be able to play it for another 30 years.