I had a close up look of the Joe Gibbs Race team Bikes and noticed something very interesting! I noticed that the front motor mount plates have been machined through in the centers and also the upper mounts have been machined out in the middles and you can "see through" them....instead of being solid mounts. You can see what i'm talking about on the Joe Gibbs web site. I think they are doing this to get some flex into the chassis kinda like Kawi did with the 08 450's motor mounts. Interesting! Wouldn't be hard to do if you had a Mill or knew a machinist. Both Josh Hansen and Josh Summey's bikes are like this.