I don't know if this has been mentioned before, but have any of you noticed how much chassis flex there is in the RTR version? Mine has tons. I can actually see my engine moving when I apply the throttle/brakes. I suppose that the Pro version with the 7075 aluminum and the milled cuts are more rigid, but the RTR's chassis is almost like it's made of rubber. I was going to get a pro chassis, but I've been getting the standard chassis for $26 on ebay. I bash a lot and bending the chassis just isn't that unusual for me.

Last week, I picked up a set of engine mounts for the Mayhem ST and adapted them to my buggy. Now most of the flex is gone and the chassis is much more rigid. I could actually feel the difference on the track. You might want to check it out.