there should be oil port on both sides of the head IIRC however 9 cant remember if it is independant of eachother or if it goes to one side and passes across to the otherside ...
i would mic. it and see if it is within spec..
i f you do reuse it i would drop the head in a solvant pan and soak it for a day ot 2..either way if you find a used one or reuse yours soak the hell outa it and blow it out
ebay has tones of them lol