Yeah, I'm using the one off my parts bike right now. Slightly better in the performance department, but not by much. I've contacted a spring manufacturer about producing replacements, ought to hear back on it this week.

Anyone have info on where to find new springs for an advance unit? Mine have lost their snap leaving me with **** performance. The advance unit off my parts bike has me on the road for now, but it's only a matter of time till it will start failing. Any help much appreciated