Hey, I recently purchased DKFH 2 and I'm pretty happy with it so far except that I can't seem to get the velocity working. I'm not a midi expert, but generally speaking, a higher velocity is going to result in a louder sound, right? I'm trying to get, for example, a snare roll that starts quiet and builds up in volume. For some reason the volume doesn't seem to change no matter what the velocity...help?!