My power steering pump is leaking out of the back cover. I bought a new o-ring for it but I can't get the snap ring out. I would take the pump out to do it, but the high pressure line won't budge so I'd rather do it in the car. Is there a trick to get that snap ring out so I can replace that o-ring? I have the oil filter out, but I still can see in there very well to know what I am doing.