Girth causing bucking at canter?

That equalizer girth looks like an good idea. I like that it has buckles on both sides like a fuzzy

I was googling and found something called “girth pain syndrome” that describes EXACTLY what this horse does. Luckily it’s an easy fix chiro wise (when it happened before, one session had amazing results), but it also mentions that horses who tend towards it should wear a “wide, well padded girth with elastic at both ends”. Which does not describe the current leather girth that she seems to dislike so much. Chiro next week, and she can wear fuzzy girths until I can get something a little more high end that works for her