To adjust drum loops to fit with your BPM, simply hook up a MTrk to the master, and also to a CyanPhase recorder. Use function 11 (Loop fit) to make the loop sound right. You may need to fiddle with this to get it right (maybe using offset, etc.) Set the Recorder to record the length you need, and save it to the wavetable. There you go, a perfect loop fit everytime. This allows for more effects in the Mtrk as you don't have to use loopfit