New LHR 75E noise

This just arrived today, and I plug it in to check for proper function. I’m getting a noise when I push the backing plate in any direction that is coming from inside the housing between the plate and motor. You can hear it when it is on, and again when putting a bit of pressure in any direction on the backing plate. Is this normal or is something loose? My 15 MKIII is absolutely smooth and quiet. Thanks for any input.


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Almost sounds like there is something built into the unit to prevent the orbit from being larger than 12mm. Thanks again.


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