sillyoversilkies, depending upon where those pieces not meeting up are located, you may not want to close them. You need a lot of ventilation. You can pick up a roof vent at Lowes/HomeDepot to cover the peak. Other than that, take a slow walk thru the stores to see what is available to cover the areas you feel need to be covered. You can always just used a board and batten method to put 1x3 or 1x4 wood on the exterior to cover slits and corners and out line openings.