I agree that suspension set can help, especially if you don't fall into the 165-185# weight range that sport bikes are set up for from the factory. However trying to dail in suspension before learning the basics is pretty pointless. If the rider does'nt know what he is doing to make the head shake playing with the set up will probably only confuse him. Also VWTurbo is riding a 2004 CBR600, one of my best friends has this exact bike, and it has the most stable stock suspension I have ever felt. It takes a pretty big mistake to upset the chassis on this bike. I've said this before here but anyone who is going to try to push their limits on a motorcycle should start by reading "A Twist of the Wrist II" by Keith Code. It is a pretty good idea to educate yourself as best you can, afterall the trial and error method can cost you your bike or even your life.