I am overall very pleased with my recently purchased DS 88. I am also using an old SC-880 module for multitrack MIDI recording that I have composed many songs on. I am having one issue I have not been able to figure out. I would like to use my DS 88 in patch mode to play the piano sound with the multitrack parts playing on the sound canvas. For some reason, the DS 88 will play the drum parts (MIDI ch 10) on the DS as well as the piano in patch mode. This only happens with the drum channel, not any of the other parts. The DS is set to only transmit and receive on a single channel in patch mode (I have tried both channels 1 and 16) determined by the global setting so I am not sure why the drum channel is playing as well. I know I could use the performance mode and turn off all channels but the DS Piano channel, but I think many sounds are better in patch mode. Any thoughts are greatly appreciated!