I had the accordian hose off and was inspecting the turbo wheel. There is no axial movement that I can feel, but there is radial movement. My searches show that 0.18mm is the maximum allowed. The dial indicator is to be placed in the oil return line to test. Looks like dead center of the shaft. My question is, how much play would there be at the end of shaft with 0.18mm of play, or should I already be looking for a replacement/repair. Would the local turbo shop know what a 57 trim is?