Bc2000 (for the BCF2000 & BCR2000)

Hello,

I got an (old) B-Control Nano BCN 44 and was trying to use it to complement my (also old) Yamaha PSR310 keyboard with pitch/bend and modulation. As soundcard i have an M-Audio FastTrack Pro (USB). When i connect the BCN44 to the soundcard and turn the knobs to directly control cakewalk sonar while playing back a track, everything works fine and the notes are being pitched/modulated. If i try to use the "Midi-Merge" functionality (keyboard midi-out -> BCN44 midi-in, BCN44 midi-out -> soundcard midi-in) then i got a strange problem with latency. When i press a key on the keyboard, the keypressed signal is being send via the BCN44 to the soundcard and the note is being played. But if i release the key shortly after pressing it, then the keyreleased signal won't be sent to the soundcard (so the note keeps on playing). Same in inverted order. If i press other keys there always has to be a delay time of approx 1-2 seconds in between, otherwise the corresponding notes would'nt be played or released. I also used MidiOX to verify how often a midi-signal is being received by the soundcard with the same result.
I observed something else that is interesting: On the FastTrack Pro soundcard there is an led indicating midi traffic. When only the BCN44 is connected, the led only flashes when i turn one of the knobs programmed for pitch/modulation. When i instead directly connect the keyboard to the soundcard, the led flashes constantly even when i don't press any keys on it. In this case no midi-signals are being received in MidiOx.
Anyways, with the keyboard directly connected to the soundcard i have no problems at all with latency in Cakewalk. They only arise when i connect it via the BCN44 in midi-merge mode.
Does anyone have an idea what might be the cause for those effects? Is it the BCN44s midi-merge implementation that causes the problems? Or could it be the keyboard irritating the BCN44 with those "ghost" signals.

Thanks,
electron8000