Everything on the 09 frame and swing-arm is stiffer, but H-D didn't change the base design which inherently has an ability to wallow. It's still a rubber mounted, un-braced design. Handling is all relative though, as some claim to never experience a wallow with pre-09's because they probably don't get their bikes into that situation (I could make my 08 wallow but eliminated most of it with a progressive stabilizer link). Even less will experience wallow with 09's because the threashold is higher, but there is nothing in the design change to suggest it can't and won't happen. But motorcycle racers can make even the latest racer-replica's waggle in the right situation as they have not invented the perfect handling bike. But don't confuse a sledgehammer for a scapel, a Road King isn't designed to ride fast even if you can. It's laughable to hear the stories about how you passed the GSXYZX-whatever in a corner. That proves that you were a faster rider and little about the bike.