As far as I can tell, everything fits well accept for the gullet width, which is adequately wide (I think) under the pommel but tapers to about half that width at the cantle. I understand that this is a common issue, and it certainly is comfortable for me but probably not for my horse. It looks like it just barely clears the area around the spine while positioned straight, but wouldn't it then sit directly on the spine when we go around turns?
I am wondering if a saddle can/should be modified to have a wider gullet channel in the back. To my very amateur eye it seems that the panels could be remade or repositioned to be farther apart. I know a great master saddler (the same guy as above) who could alter the saddle for me, but I don't want to trouble him if this isn't even possible.
Any help or advise would be greatly appreciated. I really don't want to have to get a new saddle as I saved up for years for this one, but my horse's comfort comes first.