OK I started on the rebuild of my Clutch Slave Cylander, and following the instructions in my service manual, it says remove the middle gear case cover and then says "NOTE: ...be sure oil does not leak out of the case." Well. oil did leak out of the case, about a half a cup, give or take. Well, the manual doesn't say what to doif it does leak. So, what is it trying to tel me?? Careful, oil may leak out so replace it, or if it leaks it means you have a bad gasket or seal somewhere?? Any ideas???