check your idle stop screw, awsomaha. If your engine is cutting out when you apply the brakes then try tweaking the idle stop screw. The taped screw head should be flush with the housing that it is fixed to. Take off your air filter and apply the brake. Now there should be an tiny opening in the carb that stays open at all times so that the engine can receive air to be able to idle, but if you apply the brake and that opening closes then its the idle stop screw.