Ok, I just set up my hives and am awaiting my first package of bees (I'm getting two). I got top hive feeders. Does the telescoping inner cover got deeper side down, or up? Also, how do the bees get to the syrup? I see those little grid things that snapped in along the back and front edges, do the bees crawl up through the grid? Doesn't the telescoping cover on top prevent them from crawling through the grid? How does this work?