Have you considered putting roundings on. I've found them very beneficial with my hackney x, gives me more control and better brakes!!!, and has meant I dont have to use a more severe bit.
Hi, I had a newforest gelding that was an absolute nightamre to ride with a bitted bridle, everything from throwing his head down to literally having a temper tantrum and stamping his feet. I had his teeth checked and was assured that the bit wasn't causing any problems. In the end I put him in...