I confirmed speaking with a saddle fitter last night that even with one of these impact absorbing pads she feels it will cause the saddle to pinch even more as it is already tight in the shoulder area.
I will continue my hunt for a wider saddle.
PS - Current saddle is foam as so many are these days.... so reflocking isn't an option.
I was going to say pretty much the same. There's not much you can do to improve a poorly fit saddle. Pads aren't designed for that purpose.
Some older saddles, although not the cushiest 'modern' leather are EXCELLENT fits for horses. I would try and find something used that 'fits' so you can ride without getting into soreness problems while you search/save for the 'right' saddle.
I likened it to an athlete/runner buying shoes ~ they have to fit and work to reduce wear and tear on the body. IMO the saddle is the most important piece of equipment because is sits right on the horse's back and we use it every ride.
When I used to run, I paid hundreds of dollars for new runners every six months plus orthotics ~ necessarily or I would get injuries.
Anyways ~ good luck finding the right saddle. Once you do have it you'll be glad.