Hello again Robert, thank you for taking our call and following up on your discovery. We apologize for the inconvenience caused by the missing keyway on the spindle shaft. We have checked our remaining inventory and found that this issue was not present. It seems that there was a manufacturing error in machining the keyway into the shaft. We are working closely with our supplier to address this issue and ensure it does not happen again. We appreciate your understanding and thank you for bringing this to our attention. We strive to provide the best service and products for our customers. Thank you for your support.