Not all posts listed in Specific Posts slider showing

After setting 13 slides up for the home page slider, I found only 10 displayed. It took a bit to figure out it was being limited by “Settings -> Reading -> ‘Blog pages show at most'”
It seems counter intuitive to set a specific list in the Mantra settings UI and not have it respond accordingly. It would be helpful to override the limit in the case where the user specifies a longer list, but really a quick and dirty fix would be to add a helpful tooltip to the Specific Posts posts list text box.