Answer 1: The MIDI Drawbar unit does not work with the Micro B or the Micro B II (at least not the drawbars).
Answer 2: The Micro B does not respond to MIDI volume and always has release key click.
Answer 3: The Micro B II does respond to MIDI volume and you can eliminate the release key click.
Answer 4: The Micro B II allows for chorus and rotating speaker effect simultaneously.
Answer 5: The percussion on your B-3 (C-3, RT-3, A100, M-3, or L-100) does not re-trigger if you're already holding down a note.
Answer 6: An organ with a 122 Leslie interface will not work properly with a 145, 44W, 45, 147, 47, 251 Leslie. It'll hum and you won't be able to switch speeds.
Answer 7: An organ with a 147 Leslie interface will not work properly with a 122, 21H, 31H, 142 Leslie. It may cause a fire.
Answer 8: Never plug a 5-pin Leslie cable into a 6-pin socket even if you can make it fit.
Answer 9: The contrast control is on the back.
Answer 10: It's OK to use an AC adaptor with a higher current rating (mA) but not a higher voltage rating.
Answer 11: It's not OK to use an AC adaptor with a lower current rating (mA). You'll burn out the adaptor not the module.
Answer 12: Fully polyphonic means “your arms ain't that long.”