Having only 300klm's on my 650r i am still getting my head around how this bike behaves in the engine department. Its uncorked with 15\48 gearing. The bike seems to run smooth plodding along at low revs in any gear and smooth when you nail the top end. The bit in the middle is the bit i have trouble with. There is a piont in the rev range where the bike starts to vibrate and send weird messages through the bars like the bike is saying " please just ring my neck or back off"! I am just wondering is this just a tuning thing or is it just normal for a bike like this.