Well, if it's too wide for him, it would also sit wrong on him and sore him.... All of them have different backs, and horses are so stoic it's sometimes hard to tell if it's got a comfortable fit. Good luck with the saddle guy, hope he can get you a good fit.
push...
I would have went with it being too big if anything. That's why when they recommend two pads I didn't think that would be a problem and might actually work better. Even with my old wore out pad it tended to roll it seemed. The first day I rode him with the new pads it was even worse, but I first thought it was because the pads were new. But those dry spots really bother me and I think warrent haveing it checked by someone who knows. I know soreing up a horses back can really screw them up for riding. Can't says I blame them either.
Becky