I've been reading everything I could about this mod....it seems to be universally accepted as a pretty significant improvement. I have a 3D with a Winfield installed, and now am a bit concerned about the question that low compliance cartridges are a better match. I have never heard that before. I haven't bought it yet...not because of the cost, but it would be disturbing the setup I now have which sounds good to me. I'll continue reading these posts