Those who have read my recent posts know I'm working on improving the braking on my old Trek 1400. It currently has old single-pivot 105 brakes that, for what should be midrange quality, are rather whimpy and the brakes as a whole rather mushy. I came across a pair of Shimano RX100 dual pivot brakes that look and feel a bit beefier. Would someone please fill me in on the advantages of dual pivot over single pivot? I'm switching from the old hard anodized rims to some Alex double wall with machined braking surfaces and have replaced all cables and housings being very careful about bends and loop length. So far the stopping has gone from downright scary, to reasonably acceptable. Would replacing the single pivot with the dual pivot brakes likely improve stopping, both overall and modulation, even further?