I needed to replace my throw-out bearing, so I thought while I had the pig apart, I'd resurface the flywheel, install a new clutch, etc. I also purchased a new rear main seal since I'm into it this deep already. So my question is - is there any trick to getting the old seal out & installing the new one? I've loosened the two bolts that are on the outsides of the seal, but the seal doesn't seem any looser. Do I need to also loosen the oil pan bolts at the rear on the engine? I don't want to rip the seal out (which isn't leaking, but I'm doing this as preventive maintenance), only to not be able to get the new one in!