I sync the Octo to ableton. If I hit allign (in page mode, not in grid), different pages will go noticeably out of sync.
Try this: One a page set up for controlling a drum module, make a beat. Now copy this page on the grid to another row. Now every drum hit will be sent out twice, but it may not be very noticeable. Go to page mode of one of the two pages. Now hit allign, and every drum hit will be a flam. If not, stop the external clock and start it again, then hit allign (the problem does not occor everytime, as it is probably dependent on where the clock is when you press allign. )
(Note: If you are on one page and hit allign and the flamming starts, then go to the other page and hit allign, and the flamming goes away.)