I have been noodling with the bass to midi on my VB-99 for a few months now. From looking through these forums it looks like it's not a very popular thing to do. So I will be shocked if anyone can help. But this forum has pleasantly surprised me a few times. SO... I am playing a Roland JV-1010 synth module with my Vb-99. I am getting results I'm very pleased with. I have the mode set to mono cause i want to play different patches on the synth module on each string. I have multiple voices on most patches in the synth module. Everything is working just the way I'd hoped. The problem is every time I press "write", I loose all but the first voice on a patch in the synth module. I check the MSB, LSB, and PC. Everything is still set correctly. If I turn the PC up one then back down to where it belongs, all my voices are back. But every time I try to save it, I loose all but one voice. I've been putting a lot of hours into this trying to make it gig worthy. This is the only obstacle I have left. If anyone has any ideas, I'd love to hear them. Thanks.