I have some mint-ish TRKs, and they measure about 64.5 to 65.0 mm per barrel. I measured some used TRKs, and they clocked in at 62-63 mm per barrel. So, to paraphrase Racer Mike, survey says, BZZZZZZZZT!!!
One possible solution (credit to Key West Dennis for the idea)...
I have some of those clear plastic chip spacers. They are about 31.5 mm diameter, and 3.1 mm thick. With the right sized rack, you could put one of these spacers in each barrel for the right fit. You could even glue the spacers in place for convenience.
Paulson racks and other "66.7" racks:
66.7 mm - 3.1 mm = 63.6 mm - Won't work for mint TRKs, but might be great for used TRKs.
Chinese "67.7" racks:
67.7 mm - 3.1 mm = 64.6 mm - Perhaps a little tight, especially if your TRKs are mint.
"Made in China" racks (69 mm):
69.0 mm - 3.1 mm = 65.9 mm - These racks are really cheap, and would still work for mint TRKs, but if your chips are worn down to 62-63 mm / barrel, the racks would hold 21 chips in a barrel.
If you like the idea, I'd buy the spacers first, and measure their actual thickness (in case they're different than mine) before selecting racks to buy.