Classic Nib advertises them but with no stock on hand. I have gone the "notify me" route if/when available on the site, but hoped someone had a set.
I have the appropriate centers for TBC, do many people use the standard bushings in a TBC setup in cases like this? You seem to have been around the forums for a bit... you'd know if anyone does!
James, I do stock the Pristina regular bushings and am out of stock at present but do not stock them as TBC, but hopefully will. To answer your question on using standard bushing to TBC you sure can, just might not be as accurate.