Happened to me.
The damper shaft got worn and scraped up and started allowing oil
to leak by where it enters the cartridge. It was about 6 months old,
and Fox basically told me to "get bent". They offered to sell me a
new cartridge for $250.
I ride a Reba now. I paid $50 more for it than Fox wanted for the
CARTRIDGE. Hype.
ZB