i have this same problem and right now there really isn't anything that fits really well between the U-pearl and bullet. iono if im reading ur post right, but i don't see how the SCB can work for you in between the U-pearl and bullet. iono how easy it is for you to find, but stuff that works for me that is between the U-pearl and bullet are; XL, blueberry (polished), pro-purple (slight polish). of the three, my favorite and current ball i use is the XL, but that ball is really old, but has always been one of my most reliable. imo, the XL is one of the best light/medium oil balls that lane 1 has made, very versatile, stronger than the bullet and weaker than U-pearl. of the new stuff, there isn't really a ball that fits into this spot, unless you get something that is not really new, but prlly gonna be retired soon.