Usually the oil just slops around between the sump and the rocker cover depending on the slope of the ground. There should be a drain through the lowest part of the head, with a matching hole in the head gasket, to ensure that no oil is trapped in the rocker cover. I've put a yellow oval around the drain hole in your model's head gasket (P/N 697230):
[Linked Image]

If you put the head gasket on upside down, you'll make a real mess of the drainage system.