To add some information to this, it appears that the RD-2000 sees each of these faders as a separate zone. To be able to use each fader, you have to “turn them on” one by one and when you do, you either tell each fader it’s for “External” or “Internal”. when you set it to external it gets its own zone number 1 through 8. Each time I turn off one of the faders I get one less note each time until finally, a single fader setup gives me one.
Hopefully there’s a way around this or to tell BOME to reduce those messages it sees from the keyboard to maximum 1 regardless of it seeing 4 or 8, if that even makes sense as the way to correct this.