I have a 2010 Voyager ABS and really like the bike. But I've found it too noisy for highway comfort. So I bought a pair of 2011 stock mufflers and they really made a nice change. They're quieter at highway speeds and have a nicer sound than the 2010 mufflers when riding at lower speeds. Now I'd like to address the noisy transmission. I can live with the clunks when changing gears (even though it's the first Kaw I've ever ridden that sounds like an old Shovelhead when changing gears) , but the whine in 2nd through 5th gears is horrible. 4th gear is especially annoying any time the tranny is under load accelerating or decelerating. It whines like an old pick-up truck in reverse! I know that Kawasaki changed a transmission shaft and most of the output gears in the 2011 transmission and I'm considering swapping my tranny parts for the upgraded pieces. But before I go through the expense and effort I'd like to find out HOW MUCH of an improvement the factory made in the upgrade. So I'm asking the riders out there if any of you have had the opportunities to ride a 2009 or 2010 model and a 2011 or 2012 Voyager; have you noticed a significant improvement in transmission whine reduction between the older and newer model?