Unresolved E3Dv6 Strings

I'm getting a lot of stringing in my prints with my E3Dv6. It has that little silicone sock (see link below) over it but I don't know if that's involved with this issue. I tried printing a test print and adjusting the temperature to see if it would go away but it never did. I am using a retraction length of 2mm. Any ideas? Has anyone else run into this?

Silicone Socks: https://printedsolid.com/collections/accessories-and-upgrades/products/e3d-silicone-socks-3-pack