The easier question is whats right with it

nothing

The oil seals are nackered so i use over a litre of oil in 100 miles
The shaft moves in and out a good few mm
and it moves up and down so the blades catch
urm
the shaft seems to get stuck so I hit zero boost and the car sounds like it has a police siren fitted get a few funny looks when it does that

I did think about getting the turbo recon'd but I would like to go more power in the near future so I thought I might aswell start now