Micro rail buttons

A while ago, there was a thread going around on these, and I now see they are for sale on Railbuttons.com. I recall there were some sizing issues with the micros being a little snug in the Makerbeam rail (These may have been test ones). Are the production ones sized properly, and did they sort out he barrel being slightly oversized? Yes, I'm too lazy to sand them down...

I tried emailing Randy and got no response, dunno if my email went to a spam folder or whatever, so just figured I would ask here.

Thanks..