Well, It's come time to pull apart the 1970 HT1 and do a restoration. The front fork tubes are 27mm and they are pretty pitted and look bad. I've been pretty lucky on the other badge bikes I have that I've never had to replace or refinish the fork tubes. These are so small that there doesn't seem to be an option to buy a new pair. I heard there are places that will take these original tubes in and refinish them (remove the rust, pitting, and rechrome). 

Has anyone used anyone to do this? Looking for any recommendations. 

Thanks,
Steve

One thing you can try, and you should really measure them carefully, is that Honda CG125 forks are plentiful on Amazon. They're 27mm, and at least for my DT100 are almost a direct drop in. I got a set for $50 CAD and although I haven't used them yet I kept them just because they're so close to the originals.

The internals of the CG125 forks appear to be very different than my DT100 forks, but for $50 maybe it's worth it just for the tubes. They might be able to be reused.