Featured Content in Mobile View

Hi, I have a featured content slider on the homepage, featuring 8 slides in the 4 column view. It works beautifully until screen width is less than 768px. At that point the third slide doesn't load in the correct location and pushes the fourth slide down--but only happens for the first cycle of the slider. Any idea why or what I can do to fix this? http://buddysystem.ca/ Thanks, Shayla