Hope someone more knowledgable than I can help--can't get SPD-30 to respond to SoftStep2 (or UM13). Both on same channel, Prog Chang Rx ON, Ctrl Change Rx ON (tried individually as well), SoftStep PROG mode, nothing. Also Softstep notes don't get response, thought they'd play. Both units connect to computer ok on same cable, beats me. Thanks in advance.