I picked these up at the LHS the other day and they are so cool. I used to have such a hard time pulling the pins out and then they would go *spriiiing* and I couldn't find them.
well i made these ages ago i even made a vid showing how to make and fit them. I put it up on this site some where but i think the vid has been delete as i can't find it on any of my severs but heres a pic