I recently built an LXR and am still trying to get my head around it all but ... I'm having a lot of trouble getting the LXR to trigger every time I send it a MIDI note from my octatrack. By that I mean the external triggers don't work, the internal voice doesn't play and the LED does not light up. How much this happens depends on how many triggers I send the LXR but the more I send the more get dropped and the same triggers appear to get dropped over a 2 bar period as long as the transport is running. I've tried resetting all sorts of things but nothing has helped.
Meanwhile I don't have any trouble getting the LXR to trigger if I trigger it with a MIDI keyboard. The only difference I can see in the MIDI messages being sent is that the octatrack sends a noteoff velocity of 0 while the MIDI keyboard send a note off velocity of 64 but this could be a red herring.
(The only reason I'm trying to sequence one xox drum machine with another is the arpeggiator in the octatrack, I actually like sequencing in the LXR)