I am guesting that the 'J-tube' you mention is the tube that connects the TB to the AOS.
I would think that even a healthy AOS is going to be moving some oil (vapor) into the TB so the 'J-tube' would always have some oil in it. Just guessing here
All the problems I here about here with new AOS's not being very dependable has kept me from replacing mine. I bought a new AOS over a year ago, still sitting in the box.
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2002 S - old school third pedal
Seal Grey
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