I've never experienced the problem you are talking about. Have been able to ride around with no problems what so ever at low speed. Even before I did the center spring mod. PM. <><
Well, yes you can do it, but it takes an extreme amount of throttle control, and very little throttle movement on the 06 translates to a huge amount of RPM change due to the progressive pulley at the lower end.
Many riders adjust to it, and you may not notice it after a while, but you really don't have good (precise) control of the engine RPM in the first 1/4 or 1/3 of throttle movement. A movement as little as 1mm can vary the engine RPM by as much as 4K rpm in the lower ranges. A good rider can adjust to it over time, but that doesn't make it right.
Fred, you seem to be on a crusade with this issue. Have you ever considered that it is a non-issue for many 06 owners? Perhaps there are other conditions leading to the symptons besides the pulley, such as a lean fuel injection curve, or even a combination of factors which makes your FJR worse than most. Or, perhaps your are just more sensitive than most. It matters not. I am not knocking your efforts to fix a problem that you, and others perceive. Good on you for coming up with a creative solution to your problem.
But you seem to be hyper-sensitive to the issue and needing to convince others they have a problem when they say they don't. When others claim they don't have an issue, you seem to think they do, but they have just learned to live with it and it's still there and a problem. Who are you to tell them what they are experiencing? Perhaps it doesn't take them "an extreme amount of throttle control" to operate their FJR smoothly. Perhaps they do have "good (precise) throttle control". Perhaps FJRs are different in this respect. Perhaps its all the rider. Most likely a combination of both.
Your an intelligent, and helpful guy who came up with an ingenious fix to a problem you perceived with your FJR. But may I suggest you stop trying to convince everybody the sky is falling? Don't take this issue so personally. Just because some don't agree with you on this issue, does not make their own experience or opinion any less valid or accurate. No doubt your creative fix will help some, maybe even many. But that doesn't mean ALL 06 owners need it.
Keep up the good work though.