I'm wondering if most of the crazy issues that people have been having are primarily occurring in the bikes that are being manufactured over seas. It would appear that those of us who received bikes manufactured at Hinkley are not experiencing any where near the number of issues as the other bikes. My only issues after 1.5yrs and 30,000km have been the rear brake recall, and the seat trim recall, other than that, this bike has been absolutely flawless, I haven't even had key fob issues with it.
As for your Vibration, one option could be that the wheel is of off balance, find someone who knows what they are doing, has a digital balancer, and knows what they are doing, yes it is twice, that is important, also check the tire itself, this may mean taking it off the rim and look inside to see if anything has shifted, broken cords, belts, I have had a similar issue in my car, tire looked find on the outside, tire guy took it off the rim, looked inside, and he found shifted belts, which would cause the issue as well, just a thought