The stock MC works fine, just lacks the best "feel". I had to do several panic stops on mine over the years and I wouldn't be here writing this now if it didn't work OK. I had that front tire howling, right on the edge of it's adhesion and about to slide. Can't do any better than that. But, a smaller sized MC does work a bit better, gives better "feel" and modulation. I've gone and put them on both mine now, but it wasn't a pressing change I absolutely needed to do right away. So, your original will work and function just fine. Don't have concerns about using it for the time being. You can then just leisurely shop around for a nice slightly smaller one to replace it. I shopped eBay for both of mine and it did take some time to find nice, reasonably priced used ones. Most were either really beat up or way high priced, or both.
