There is a gentleman over on the accurateshooter.com forums who goes by "sparker". He tuned up a Redding #2 scale for me a few years ago, and made a big difference in how it performed. He is highly regarded on that forum, if you want to do a search on him. My personal experience with him was excellent. If anyone is thinking of staying with a beam balance scale, I would recommend a chat with him.

Steve