When I'm recording (TD-50 via USB audio), I sometimes notice that every so often a snare hit, for example, will come through at a really low velocity. I know my striking velocity is consistent, so it seems like some sort of anomaly with the module. I'll notice it while playing and end up redoing the take. Has anyone else ever experienced this sort of thing?
However you might want to consider also recording the MIDI feed (if you aren't already doing that) so that if there is an anomaly with one or two strikes you can check the data and if need be, edit and regenerate the audio.
TD-50KV extended kit with DW pedals and stands. Additional Roland mesh pads and cyms, plus TD-9 'sidecar' for additional triggers and sound layering.