I recently contacted D3 via the contact line on their site about a couple of matters re my old Quest 45,including a blemish on the " clear top coat ".
Quoted my serial number and attached photos.
Received a reply within hours from TW that gave full ski production details which answered one question and an explanation from another of their tech guys (sorry cant recall his name ) explaining that D3 do not use a resign top coat, rather a plastic top layer, Both issues addressed very promptly and advice given to successfully address the second issue.
Great customer service D3.