I have had personal experience with RSX brifters on the 96 Trek 470 I owned last year. I sprayed the hell out of mine with WD-40. Then the can ran out and I used a half can of silicone spray I had kicking around. The shifters were working okay before, but "hesitated" every now and then. After the flushing, they shifted very well with satisfyingly crisp clicks. Really, a beautiful action for a 7 speed drive train. No problems after that.