I'm having a wonderful time on my '11 ABS (2000 miles), but seem to be experiencing an annoying noise that becomes pronounced at 2500 rpm, then lessens after 3000. Having grown up on two strokes, it sounds like piston slap. What is really annoying is the RPM range is right in the touring zone. I'm going deaf. I brought it in to a local dealer, who had a mechanic test ride it, and, you guessed it, "I couldn't hear anything". My wife can hear it over the intercom. Anyone experiencing this? Any ideas?? We're taking off in 2 weeks for California/Oregon, and I don't want to be calling a tow truck.