I am hoping to get advice on the following bit situation. I have a 6 year old Paso Fino/ Mustang cross. When I bought her, she was green broke and trained in a Tom Thumb bit. I had read several bad reviews regarding the Tom Thumb bit, so I tried switching to a D-Ring Snaffle, then a Full cheek Snaffle, but my horse was not having it. She tossed her head a lot and would constantly fight against the bit. The trainer I was working with at the time told me to go back to the Tom Thumb and I no longer had problems.
A year later and my horse has been doing great and has really made great progress in her training. She is responsive to light cues and we have started some light jumping (for fun). I am trying to transition her to a regular O-Ring snaffle or even a D-Ring Kimberwick (so she can still have the same leverage effect she is used to), because I have read bad things about using a direct rein with the Tom Thumb. So far, she is not having it. She is fighting the bit and not acting like her focused self. I know that she may just need to get used to the feel of the new bit, but how long should this take? Am I wrong to try to transition her? I am under the impression the bits I am trying to transition her to are the proper choice for training.
FYI: She has had her teeth floated in the last 6 months and I had the vet check her teeth again this month when I first started trying to make this transition. Her teeth are fine. I am not experiencing any behavior problems when I ride her with the Tom Thumb or even bitless (in the arena only). Should I just stick with what works? Am I being silly trying to change her bit?
Any advice? Thanks!