I have been searching here and other locations on the web regarding an oil leak issue I am having on my "new to me" 1942 round dial 10EE. I hope someone may be able to help me. When I add oil to my rear headstock bearing, the sight glass fills to the correct level and within minutes it has drained to empty. (and I have added a significant amount of oil) I don't know where it is going....I have not yet found a large oil puddle on the floor under the machine nor can I see where it is coming out under the headstock castings...Also, I can't see how I am going to access any area under or around that part of the headstock casting without a major tear-down. Hoping someone might be able to provide some information. The manuals are not helping me much to determine where this oil is going... Thanks for any advice.