CLA Nikon F6

Have an opportunity to buy an F6. Always sent my F5's to Authorized Photo Service- great place. They said have to send it to Nikon for repair or CLA. Called Nikon and only get voice mail. Any idea what Nikon charges for a CLA on a F6? Any independent dealers that can repair or do a CLA on a F6. Thank you

The F6 has a self adjusting shutter. Is there a reason u think this one needs service?