I'm running my JX-305 with another synth, a sampler, and a PC running Cubase VST. When I'm playing a song from Cubase, set the internal clock on the JX on "slave," the loops on the JX sync in well, at first. However, during the course of the song, the JX slowly becomes out-of-sync with Cubase...It's weird, because the metronome keeps time, but the actual drum beats don't...Does anybody have any insight on this?!!?! Thanks! Jay