I just picked up a 1987 TW and went to check the ignition timing. When I removed the timing cover (plug at top of left case) with the engine idling, the magneto housing was pressurized and oil mist was blowing out of the inspection port. I pulled the left case cover and it was full of oil. Is the magneto/starter compartment supposed to be wet or dry? If it's supposed to be dry, then I guess I have a bad crank seal... Comments? Thanks for your help!