If the ShortStop is not properly adjusted, there's a noise when the string fights it's way into the groove. Easily fixed. They aren't necessarily adjusted properly when they are boxed up - and I'd venture to say that most shops don't do much in the way of aligning that part or making sure that all of the screws are Tight with a capital T. It really doesn't take many shots by prospective buyers to "activate", for lack of a better term, the effect of energy disipation from the string coming to an abrupt stop in it's forward travel - resulting in loosened mod screws.

I don't own a 101st yet, but my Marquis is similar enough that what I experienced probably holds true with any of the Bowtechs with ShortStops, and I quickly learned that having the string land perfectly in the catcher makes a difference. And whether it lands perfectly or not is more on the guy who releases the string than on the bow. Although "the book" says the groove in the stop should be directly in line with the string, and just barely touching it when you pick up the bow, if the archer has even the slightest cant in his draw-and-release, the string will miss the groove and create a sound. That's why there is adjustment in the positioning: to match the feature to the archer's habits.