I have used Turnigy 9X TX/Rx combo for about 4 years with excellent results. However, mixing channels is a mystery, so I follow what I've seen on Youtube. Works with a Flitetset Bronco and a Hobby King Lancaster, except - one side starts before the other! How do I balance this? Using rudder trim does not seem to work, so is it something to do with the even more mysterious "Offset" parameter?