start from scratch even. loosen the brake right off at the grub screw, center the radio and adjust then travel on the carb, then move the collet up to just before it puts pressure on the brakes. you can play with the length of fuel tube for amount of stab in the brakes or even use the end point in the radio... like setting the carb end pint... I use the thumb toggle on my dx3 for the brake adjustment and can change on the fly depending on track conditions etc... I don't like a lot of brakes myself... just enough to get it to do what you need... can go one step further with some radios and have another button to have a higher preset brake end pint for panic brakes... too much for my brain, but just offering options.. I do play with the end points and fuel tube lengths...
on 8th scale buggies I tend to like more back brake than front to keep the front from diving in a corner and helps kick the back end around if needed, so run a little shorter tube on back so it hits harder. once you max it they are both going to lock the same but initial braking is in back