Before you replace the brake levers on your Delta brakes in a quest for improved performance try this trick. Set up the cable very loose. You should be able to bottom the lever against the handle bar using just your index finger and thumb. The mechanism has a very radical change in ratio. If you set them up with the shoes too close to the rim you are not getting into the power phase. The other thing that makes Deltas much easier to live with is to mark the cable length with a sharpie, remove the cable, cut it to length, and then solder the last inch or so. I have a few customers that think I am some kind of wizard because I was able to make their Deltas stop when the last 10 pro shops couldn't. Jamie, I'll take dual pivots any day, Swan.