I had mine done by van den Hul, and am happy with the results. I can't tell you how to get in touch with him, but it shouldn't be too difficult.
Koetsu cartridge rebuild
I have an older Koetsu Rosewood and was wondering if anyone could recommend someone who rebuilds these things. I've never even thought of doing this before, but I see fairly often where somebody is selling a retipped or rebuilt cartridge. Any help would be greatly appreciated. Skip