Hey, I recently got ahold of an old Korg AG-10 sound module. It's the first time I've used a separate sound module, and I have no manuals, so after finally getting it to integrate with my sequencer....well, here's my question. The device has built-in chorus and reverb effects, and right now the reverb is kinda stuck on. What is the more-or-less standard way to control an external MIDI sound module's effects? Thanks, --Gabriel!