This one is probably really simple to remedy, but my searching has been in vain. Last night I was sound checking for a show. It was dark and I inadvertently hit some rando buttons while trying to remember how to access a setting. Whatever I did, I now appear to have linked two tracks. I have flex machines on track 3 and 4. When I load a sample on track 3, the same sample loads on track 4. When I change the sample on track 4, the same sample loads on track 3. If I change one of the tracks to static, the behavior stops but returns when I switch back to flex. How do I disable whatever the heck I enabled?