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After 5,200 miles since August, still no vibration on my '03. I think Max is correct in that the stalling and vibration are related and to start with the plugs and coils. I just changed my plugs at 5K and they looked nasty. Next, check the electrical system backwards to the ECM brain. If every connection proves solid, reflash the ECM or install a new one...a known cure by HDI on stalling issues. While at it, check the VIN to see if your bike is subject to the fuel line flange recall. After these efforts, then look for something mechanical like the motor mounts. Hope this helps.