Hey, this reply might seem like thread necromancy, but for anyone googling "Shimano RSX", this is the best advice they could stumble across. I found a Novara Randonee at Desert Industries (like Goodwill for Mormons, based in Utah) with full Shimano RSX for dirt cheap. The front brifter worked fine, but the brifter that shifts the rear derailer was broken. Without dismantling it, it seemed really ****ed up. Like completely non-functional. I assumed some fine toothed piece was broken inside, and thus it was a lost cause. I was searching Ebay for a replacement. I found this thread, and thought what the hell. I used a degreaser where the cable exits the shifter, and poured as much in as I could. Then, I worked the levers back and forth. I was amazed to find that it started to ratchet the cable in and out, instead of doing nothing as it was before. I worked it some more, and poured a bunch of prolink inside. After working the lever for a good 5 minutes while adding more oil (to the shifter cable ratchet, don't just peal the hoods back and pour it into the brifter body, locate the cylindrical ratchet device at the very front of the brifter), it began to shift perfectly. After dicking around with it for 10 minutes it was totally revived. It now shifts perfectly. If you have RSX Brifters that aren't working properly, don't hock them and buy expensive replacements on ebay. Just hose that mother out with wd-40 or some kind of degreaser while working the leavers, then oil it up with your favorite chain lube. If you need better access to the cable ratchet, you can undo the Allen bolt on the very front of the device and remove the faceplate, but be prepared to mess around with it until you figure out how to get the spring properly seated again (this was the hardest part of the procedure, but don't panic it just requires patience). I don't care how many forum posts say these are low level garbage equivalent to modern day plastic Tiagra... Once cleaned and lubed, they click reliably and solidly. Keep em lubed and I bet they will outlast any budget plastic replacements floating around today.