ORIGINAL: silverj
I also run a HS-645G for my Ravager's throttle and brake. It used to coast to a stop and now will lock up all four if adjusted to that point! Ihavent gotten around to changing out the steer servo yet but it's a must.
If you ever run a faster servo even on the throttle and brake you will never go back to the SLOW 645! I ran a 645 and until I ran faster servos I never realized how slow the 645 really is.