So I noticed my 727 is puking a little fluid out of the vent during a run. It does have a transbrake (Turbo Action pro brake) and the vent is relocated to the top rear of the case at about the 11:00 position when looking at it from the rear.

Why is it doing this? Is it overfull?

Should I install a breather tank? Just remove the vent and put a different fitting in the case plumbed to a catch can? Should I do it in -4an or -6an line?
Any particular catch can yall would recommend?
I found this one earlier...
https://allstarperformance.com/mini-breather-tank-panel-mount-all36142/

Any other suggestions?
Thanks