Hay just to give you guys a head up HPI changed the Super HD ring and pinion. (IE Standard Flux gears). Where the bearing rides on the ring gear has been machined down so they can use a bigger ball bearing. The kit comes with the bigger bearing. I wonder if it is the same ones that are used for the pinion gear. The pinion fits right in it.
josh
http://www3.towerhobbies.com/cgi-bin...&I=LXWUZ7&P=OW