well, to answer the first q... Have you calibrated the controller?Try doing it again if you have. I use several different controllers on mine and everyone has to be calibrated different. Maybe you need to assign a different channel to the throttle...... You might try that if it doesn't work at all... Sounds more like this is the problem though. Also, yes I believe you need the adapter for the futaba radios... It's cheap and available... Good luck, Chris