Before you guys go crazy with the weight, check out the difference in weight between your lipos, and what the pros are running.

I don't like weight in my .1, but I think my 5000mAh lipos are on the heavier side. My home track is fast,and thight, and the lighter car rotates MUCH better IMO.

With the additional 8mm, it makes sense that they'd want to cut down on the added weight. The +8mm on the 2wd calmed it down a lot.