decided to try messing around with a 3-pin scale and realized last minute that i had no idea what to wrap the middle pin with so i ended up cutting down and using a small piece of a ball-point pen ink tube. =]

so my question is this ... what should really be used on this pin? and where can i get some of the right/correct gage to slip over a brass or nickel pin rod with minimal play?

thanks!
-s.