Thanks for the considerate reply.
I haven’t noticed him grinding and the vets didn’t note any evidence of it. He is a cribber, but a pretty mild one. When I mentioned that to the vet and the bodyworker, they both said they didn’t see much evidence of it where you typically would for cribbers.
To be more specific it’s a Kimberwicke bit which my trainer had given me for my previous horse who could sometimes also get strong. We started the first couple jump lessons in my D ring turtle top bit, but I needed more leverage when he would rush the jumps so I switched to this one. I’ve played with the rein position a few times–it’s currently on the lowest slot.
For the trial videos in the outdoor arena he was in a loose ring snaffle. On XC I’m now noticing/remembering he was in a different bridle that I think was an eggbutt. Both indoor videos are the same Kimberwicke.
I wouldn’t say I’m ever nervous in a fearful way in these lessons. The obstacles are so small I usually start out feeling confident that we can get over. If anything I probably have been taking it too much for granted and assuming he’s not going to balk when we’re just starting out over basically a speed bump. So when he does start stopping it’s more that I get flustered which he does probably read. I will say I don’t love doing those awkward jumps from a stop or when he speeds off after a jump but otherwise I’m not necessarily nervous to jump.