Are there any places online in the western world where I could mail in a wither tracing and have a professional give me advice on "your horse needs an XYZ western saddle"? I found that service from Trumbull Mountain very helpful, at least as a starting point, when I was looking for a good english saddle a year ago.
All this business about bars and skirts and flares and different saddles depending on the intended use (roping, cutting, barrels, trail, etc.) makes me want to go find a bar, LOL.
I'm sure that any of the makers that do customs could do something like that. My brother in law does orthopedics for people, I've often thought about getting the foam that he uses to make casts of people's feet to use on a horse for a wither/back form In the past I've used ground wire that my hubby uses in his job to "trace" withers and then took it with me shopping.
There are a ton of options in the western world. If you can't locate a fitter, try local tack shops and ask if they know of one or if you could trailer there and try saddles out. Our local shop will let you leave a deposit and try one out for a week.