It definitely looks like you have some issues. Looks like oil is leaking out of the chra into the turbine side. Just so you know, the Garrett water cooled dual ball bearing center cartridges are non rebuildable. The cartridge must be replaced if there is internal damage.
I hate to be the bearer of bad news, but we (PTE) no longer offer or carry the water cooled dual ball bearing Garrett center sections. You would need to contact a Garrett Performance Distributor like Limit Engineering and see if they can repair it for you. I'm sure Chopper could take care of it, they are a stocking Garrett Performance Distributor.
Wish I had some better answers for you.
Patrick