I agree with maura here, if I had a horse that was not consistently in front of my leg I would definitely not want it out on cross country. Being able to have your horse go forward and come back when asked is essential out on xc! I would suggest going back to the basics and then when your horse is listening better work on smaller stadium fences until you have a consistent jumper!
Maura, I really like the way you worded your post! :)