yo, im pretty new to r/c cars, ive got a little buggy, its an acme condor im pretty sure.

im pretty sure ive got my head around how to tune in my engine but whenever i brake the carbi closes up entirely and the engine stalls. so i need a bit of advice one making it so that the brake engages without the carbi closing all the way up and stalling the car. its probably something easy and simple but, i havent figured it out. so any advice is muchly appreciated. thanks.