no such thing as a good flying pattern plane in FMS, it doesn't use side area and so wont knife edge, and hanging is also a problem.
there is a huge German site which i got 90% of my planes from, it has the G-trick 90 in 3 different versions for different flying, same gos for Majestic and Sensation.
type FMS in any old search engine and enjoy a days searching and downloading. don't have a Sabre yet, but if you find one let me know so i can turn it into a Wattage F-86 and put it on my site with the Sabre review