Can i just comment and say that if riverdale wanted/needed advice on her bitting she would ASK for it. If you are interested do it on your own time, not hi-jacking another thread. Thank you.
I have been having exactly the same problem, for a long time- but it seems like we have cracked it now.
The only way we have got around it is like many people have suggested, get straight into trot, and make your horse work!!
I have put ear plugs in mine to stop any distractions, and whacked...