Charles, thanks for that last comment. If these fuses have that kind of impact in the coincident gear, the decision to invest in these fuses becomes pretty easy. Since I have stock fuses in nearly everything, the improvement should be pretty substantial. I intend to proceed in a very slow deliberate fashion however, replacing one fuse at a time, allowing break in to occur before proceeding with the next purchase. I am also intrigued by some of the comments on the AM beeswax fuses. I can't help but wonder if they might not be a superb choice for the franks. Beeswax in a fuse is the kind of wacky stuff Jerry comes up with that causes some to smirk, but I have never seen his stuff fail to deliver. At any rate, I will have an SRB fuse for my CSL by next weekend. I'll probably proceed to the sources, and finish with the Franks.