tsw & duckandcover,
When I last emailed Hakan, he was trying to get a steady source of Koa. Don't know the current status. You may want to get some scales and then send them to him. I hopped over to ebay and was able to get 3 pairs for a decent price. I donated my second pair to Hakan and the third went to a fellow forum member on thehighroad.org who will have a set made for his 1911.
Al