Grey green juice from Malbec

For about 6 years now these Malbec vines I have produce a grey green juice my winemaker fixes it but I would love to provide a better juice .
I grow in southwest New Mexico river valley clay sand soil.
Any recommendations?
The provided picture is at 22 brix
[https://drive.google.com/file/d/13-K11D1e-aJpnGOEOe9-chlvv4fStj2A/view?usp=drivesdk](https://drive.google.com/file/d/13-K11D1e-aJpnGOEOe9-chlvv4fStj2A/view?usp=drivesdk)