I have noted that the B3 organs have no variable velocity. You have to handle volume changes with CC11 (Expression). This works out surprizing well with the BIAB RT Midi since it also will not always have velocity setting.

Dan, BIAB2024, SoundCloud Win11, i7(12thGen), 32GB, 1TB SSD(M.2 NVMe SSD), 2TB Libraries, 1 TB(WD-Black), 2TB SSD(M.2 NVMe SSD)Data, Motu Audio Express, Keystation 61, SL88 Studio, Reaper