Cataract lathe seeping oil - a problem?

Hello Folks, I recently noticed a small amount of oil seeping from the right side of my plain-bearing Cataract 47 headstock pulley, as shown in the attached pic.
The lathe is working well, with no unusual noises or vibration.
The only recent change I made to the setup was adding a belt tensioner.
Should I be concerned? Any investigatory/remedial steps I should take?
Thanks,
Jeff

There is a drilled hole that is a well for oil storage below each headstock bearing. The well is supposed to be filled with wool yarn that wicks the oil up to keep a wool felt pad in a slot in the bottom of the iron bearing soaked with oil. It is the oil in the felt that keeps the spindle lubricated. There is a wool felt washer inside the brass bearing cap that becomes soaked with excess oil, but will eventually allow some oil to escape, usually between the inner bore of the brass cap and the spindle. Each spindle bearing has an oil cover on the rear of the headstock that allows adding oil. There is a machined passage that connects the oil cover with the well. As long as the wells contain oil, the felt pads will keep the spindle oiled. Once the wells are full, added oil will try to go straight out around the spindle. The oil will get warm while the lathe is running, making it run out more easily.

Tony has original catalog cross section illustrations of the Cataract headstocks showing the oil wells, yarn, felt and circular passage.

Larry

Do you happen to know what is the specs for headstock bearing need to be set for the spindle?