Oh yea, Ali has a video on adjusting the brakes.. Pretty self explanitory, but just know when he says "on idle",(he uses that phrase a few times during the video) he means when the radio and car are both turned on, but with no input on the throttle/brake trigger.. (basially turn them on and dont touch the trigger.. That'll be your "on idle" setting)  Here's the vid: Adjusting brakes on Redcat 1/10 Nitro
Note: if you have an 1/8 scale model, they also use the metal "pads", but I dont think they have a "finger" tightener adjustment, like the 1/10..