I would like to stack two 5 el 6M beams,,, I want to point one East, one West, I only have about 5 feet between them, they will use separate feedlines. Is 5 ft enough separation that they won't "see" each other, won't interfere with each other? It worked OK for a 2 and 6M beam, but not sure if 2 --6M beams will work this way. Bob W0DXZ