David,
The others have given sound advice: fixing the unbroken may be useless and will be expensive. I have a weakness, actually I have several and they are various acquisition disorders. Among them is BAD or the gotta have it now brush buying disease. While the various brushes I've purchased feel slightly different to my face, they all make lather just fine. So if you think you want another brush, you may not actually NEED another brush. (Brush sellers, please forgive me for what I have said)
But your curiosity may compel you to try another brand or style of badger follicle sprouts. If so, drive on lather maker, drive on!
