Just in case someone else is going nuts while tracking via usb audio. I was going nuts that neighboring channels I wanted to record separately were overlapping. remember that if you load a stereo sample it will output on two channels of the usb audio.
It took me a second to figure out to change the tracks to mono so I could get one track for each instead of the bussing effect of two neighboring tracks together. Drove me crazy for at least 20 minutes until I figured it out so maybe this will help someone .