I just read your PM and I don't have a copy of the sketch but I know where to get it. It is harvest time here for the next couple of weeks so I would not be able to get it to you for a while. If you read the post on this thread around the time I was setting up the radio I think you would find all the mods you would need. I'm just a farmer and I got to work very well. If you do some programming is C you should have no problem with arduino programming.
You may have read I'm trying to put a buzzer on the drone that would help find a lost drone. If you could wright a mod program for that it could help you find yours when the Tx malfunctions.
The fun part of doing a mod is learning how stuff works by trying little mods of your own and seeing if they work.