As I mentioned before, I run a "gyturbo" unit from ebay, works good.
Shaft play is not caused by seals, but by worn bearings or worn shaft

Forget resealing the turbo yourself - been there, done that, this will not work without rebalancing it at high speed - consulted a few experts about it. I knew better than them, went ahead and of course following Kent's instructions to the word resulted in a nice angle grinder sound. Maybe it was too worn out I don't know, easier, cheaper to just buy a new cartridge.

Lots of oil from exhaust seems like the oil feed line to turbo is dripping hard into exhaust...? Has your oil level dropped?
I had two broken PCV valves and they resulted in a oil shower in the engine bay, not the exhaust