Mike,
Do you have a fan or non-fan version?
Usually for the fanned version there is a single wave washer between the fan and the front bearing. Then there will be a stack of washers to set the end play. When the front end bell is tight there should be .005-.010 movement in the shaft and it should be feel smooth.
Add as many washers as necessary to the back end of the rotor as necessary. One of the washers also needs to be a wave washer.
Magnetic centering is not super critical with the ironless LMT motors.
Tyler
Tyler Garrard
NAMBA 639/IMPBA 20525
T-Hydro @ 142.94mph former WR
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