Somehow I think they just probably do that to every Japanese bike they meet, just to "knot your undies." They probably have been doing it for years, and enjoy the self-doubt and needless concern they cause. Then again, that's because I agree with the #4 comment from srk468.
This should be easy to diagnose, just get your bike warm, and while it's on the sidestand or centerstand, walk around behind it and check for yourself. A rich condition should be very evident.
One of my favorite moments from being in Daytona for Bike Week, and I've been there for nearly 20 spring seasons, was this year, when we were headed down to a seafood restaurant off Nova, south of US 92 (Speedway Blvd. which passes the track). There were some Gen X-looking younger Harley bikers, and they were in the lane to my right. One pair was a guy & his "bitch," or whatever they call their female riding partners, who was on the back. Traffic was heavy, pretty-much stop & go. It took us several lights to get through an intersection, and every time we moved, they were about next to me and my bike.
Now, Just before I was getting ready to leave for Daytona, I had a mechanical issue come-up, which my shop owner, Steve, at Under Pressure in Dania Beach FL, fixed for me, otherwise I would have been a four-wheel attendee, as I won't ride my sportbike in that traffic, my back can't take it. Just prior to that last-minute thrash, I had him install my UFO 4/1 Dragstar full exhaust, w/the bologna-cut stubby 'muffler' (a muffler in name-only, not by function!).
Having ridden the bike around for a week before Bike Week, I was amazed at the sound level the bike had. It sounded more-like a dragstrip exhaust, which, bearing in-mind its name, I guess it is! I tried calling the late Jon Cornell (prior to his demise, of-course), and asked him to fab-up one of his megaphone exhausts. He said he could make it, no-problem, but since he sends it out for the Jet-Hot coating, he couldn't guarantee I would get it in-time to install for Daytona. I even told him to overnight it if it could get to me before Thursday before the last Bike Week weekend. If it couldn't, then just send it regularly.
Well, he couldn't get it back in-time for me to install, so I went to Bike Week this year w/my UFO 4/1 loudly-proclaiming the sound of the 'Max.
So, there I was in stop & go traffic, just south of the Speedway, Friday night, and the Harley guy & his passenger next to me. Every time we moved a length or two, she got a UFO-salute. I watched her, and she kept wrinking up her face, and finally told her boyfriend, "that rice-burner is too-loud!" Not too-loud for me to hear her, and I have to admit, if you can make a Harley rider or passenger complain about your Japanese bike's noise, it must be "worthy," in the sense of Wayne's World. I just laughed at her, and once we were clear of the intersection, I didn't encounter them again. We had a great seafood dinner that night, and I slept soundly, even though my bike was to loud for a Harley passenger.:biglaugh:
I still think those H-D people were just trying their best to cause you needless concern. :damn angry: