I've put about 1500 miles on my 46 C O E over the last 5 years or so and I've developed a grease leak on the bottom of the steering box. It's coming out the bottom bearing ajustment thread at the bottom of the lock nut. The grease is coming out around the threads. The gear box is good and tight and so is the lock nut. I don't want to disassemble the box. Is this normal?

1946 C.O.E. with a Holmes Traffic King Wrecker