I am at Osgiliath and I cannot reach the third item that I need to give to the third Orc. I have been trying to bounce on the mushroom but I cannot reach the other side of the gap. I think I need to get something for the person in Minis Tirith but I don't know what, I have been searching in both places. If I get this I think it will let me get the helmet for the Orc so that I can go on to Mordor. Can somebody help me please.