Her body shape has changed since I bought her, and my Wintec All Purpose with the Cair easy change (nothing easy about it) Gullet system. At the time, she was an "extra wide" (fitted by saddler) and that was the gullet in the saddle when I purchased it. Well Rosie was a four year old then who had not been worked at all, well really never had a saddle on as they didn't have one that fit.
She's six now, working for 1+ hours x 6 days a week at mostly working and extended trots with lots of stretchy walks, spirals, circles (20 and 10 meters), cavaletti, etc. Her body has shaped and changed over the years obviously - but now she's REALLY getting well muscled.
I noticed last night that pommel of the saddle was sitting directly on top of her withers AFTER bearing my weight. It's not that way when I saddle and tighten the girth. I can easily get my three fingers sideways between withers and pommel. It's only after I've been sitting in the saddle does it smosh down on her withers. Poor girl, I'd be a bit upset with that as well.
So I started looking through pictures, at the Starry Nights Dressage Show you can clearly see the pommel sitting up off her withers, so this is a very new development.
More to come tomorrow as I do a more thorough investigation, pictures and tracing.