I'm guessing the hub has the 'normal' track chainline? i.e. 41mm.
If you need it to be 3-4mm out, you could try a goldtec hub which has a chainline of about 45mm, then fine tune it with a slightly thicker or thinner cog.
Or you could just try thinner or thicker cogs (some cogs are thicker on one side than the other) on your current hub to try and shift the chainline slightly.
As long as the chainline is straight within one or two mm it'll be fine. Chains won't throw as easy as people seem to think.
I'm guessing the hub has the 'normal' track chainline? i.e. 41mm.
If you need it to be 3-4mm out, you could try a goldtec hub which has a chainline of about 45mm, then fine tune it with a slightly thicker or thinner cog.
Or you could just try thinner or thicker cogs (some cogs are thicker on one side than the other) on your current hub to try and shift the chainline slightly.
As long as the chainline is straight within one or two mm it'll be fine. Chains won't throw as easy as people seem to think.