Try Tim's turbos in Alexandria VA. He's a 1 man band but does good work.

How much end play do you have? Does the impeller move in/out more than a couple of MM? Do you have oil residue in the turbine side of the turbo. On larger Garrett thrust bearing turbos end play can be as much as 3/16 of an inch so a couple of MM should not be bad as long as the compressor does not rub the housing.

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