I have a 2006 that I purchased with only 2 miles on it. Now that it has about 2600 miles on it I also notice a low speed stutter . I have put injection cleaner in it off and on since I put chased it. Sometimes that works. Other times it does not. I have asked others on this forum for suggestions. I think it has to do with the old fuel, which I had the dealer drain before I rode it. Howe er, since the bike had been started and idled before I actually rode it, I think the bad gas left the injectors coated with something. It may just take awhile for the stuff to finally get cleaned out of the system. I have asked the shop about it and the only solution they can think of is to put the injector cleaner in every time I fill up till it clears it. They did pull my plug, though it sometimes feels like it is missing a beat still. Sorry I can't be of more help.