While vacuuming, going from the "hardwood to carpet" function, I realized the soft roller was not spinning. After cleaning everything off/out, I ejected the roller to which the plastic "gear piece" the sits over the metal post to fit into the soft roller and holds it in place had broken into pieces. I'm knowledged that it is in fact time for a new soft roller, that I can purchase, BUT...can I replace only this small piece that fits into the roller to secure it? OR, do I now need an entire new piwerhead?