Good evening, We have a ID x 16.2hh and big with it he is fabulous but we have a problem with him pulling when hacking out. He puts his head right up in the air when he first goes into canter but then drops his head down and is so hard to pull up. He has both avoidances covered! He has his teeth done yearly more if the dentist advises it and has the chiropractor out regularly for maintenance rather than anything being wrong. My daughter mainly rides and hates pulling on him to slow him down as she rightly says that is not a pleasant experience for her or the horse. I am old school so i suggested a kimblewick which he really did not like or go well in, he seems to dislike a straight bit. We have tried a Neue Schule veribend universal bit which makes no difference to him, a friend suggested a waterford snaffle which also made no difference to him. My daughter has said she may as well return to the snaffle as he is the same regardless. When out for hacks or jumping he is ridden in running martingale, schooling at home he does not wear the martingale. Any advice on the type of bit to try that he will listen to. Many thanks.