HP Pavilion TouchScreen Laptop, 16G RAM. Windows 10, Finale 25, KORG X5DR hardware MIDI module

I know this is an old post but perhaps some things I will discuss here are pertinent and will help users who have just found this thread.

BACKGROUND

I have used the aforementioned hardware MIDI module for years, because its sounds are superior, it has low latency, but primarily because it has 8 MIDI drum kits, one of which has the Latin percussion sounds I have used to write charts for my Salsa band and to sell.  The older notation program I used is no longer supported and is buggy under Windows 10, so I decided to import the files as MusicXML or MIDI into Finale.  Problem is the X5DR has different MIDI Note Numbers for the percussion sounds than Garritan Instruments for Finale. So, if you choose Play Through VST, the non-percussion instruments will sound correctly but the percussion instruments won't.  So choose Play Through MIDI and set up playback to play through the interface to your external synth module.

FACTS and DISCUSSION

1. The instrument and percussion do play back correctly because FINALE's MIDI/Audio -> Device Setup -> MIDI Setup does recognize the USB-MIDI interface, so I set Finale up to play back through it.
2. The percussion instruments' notation is wrong because Finale doesn't know the X5DR and has no MIDI map nor Percussion Layout for it.
3. HERE'S HOW TO FIX IT.  IT'S TEDIOUS, BUT IT SOLVES THE PROBLEM.

1. Under MIDI/Audio -> Device Setup -> Edit Percussion Maps I created a new map, named X5DRPercKit.  In that map (using the info in X5DR's manual for the MIDI Note Numbers of each instrument), I added each instrument to the map.
2. Doing the former, you either have to find an appropriate instrument name in one of Finale's libraries (most of my Latin instruments were found in Auxiliary (like WoodBlocks, CowBells, etc) or World 1 and World 2 (like Bongos, Congas and Timbales) or create Custom instruments (the Custom library), which is more tedious but it gives you the freedom to name each sound.
3. As you add each new instrument name, set its MIDI Note Number. The important thing to note here is that the instrument name and its MIDI note number are the only data that you need, because you'll be using your own device, not Finale's, for playback.
4. After creating this new MIDI Percussion Map, open Score Manager
5. For each percussion instrument/track, click on that track and in the Notation Style box t lower right.  Select Percussion.  Select the current instrument.  Select Create or Edit as the case may be.
6. This opens the Percussion Layout dialog.  Select the MIDI Percussion device you created as the input to the layout.
7. You now have your custom drumset loaded with the correct MIDI note numbers.  You can add specific sounds (e.g. Hi Bongo Slap) and set the staff position and head type.  You need to do this for each instrument/track and for each sound in that instrument/track.

NOTE: Layouts are specific to a song file.  You need to export them to a layout library to use them with other songs.  File -> Save Library (select percussion layout.  Give it an appropriate name.  I gave mine the name X5DRPercLayout.lib).  If you want to go back and save more attributes separately under a different name, you can do so as well.