Phil Wood high flange rear track hub question

[Bones]

I'm rethinking the drivetrain on my Simpleone. I've got a Phil Wood fixed/free hub here. The chainline with a track cog looks to be right at 42mm. A White freewheel measures closer to 46-47mm. Is that the best I can do? Can the end caps be replaced? The reason I am asking is because I have a track crank I would like to use, but if the chainline is way off I will probably be better off using a road crank and BB instead. I spend most of my time in single speed. Any help would be appreciated!

Thanks,

Bones

[Bones]

BTW, I have a nice Sugino 75 BB I'd like to use, that's why I didn't mention changing the BB, as that would be an easy solution.

Bones