I overdubbed some vocals on a session using my Digidesign MBox, which has a fixed I/O Buffer of 1024 samples. There seems to be some remarkable latency upon playback. I want to move all the regions containing vocals 1024 samples earlier. In ProTools I would just click on each region, find its absolute position in samples, subtract 1024, and type in the new number. How can I do this in Logic Pro 7? The sample editor doesn't seem to do this, which means it's really mis-named.