This is an easy fix.  Yes, sometimes the brace will squeak because of the advanced resin used in the Performathane® shell.  Any type of spray lubricant such as silicone or similar sprayed directly in the rivet/hinge area where the upper and lower components meet will stop the squeaking.  You can purchase silicone spray lubricant at any hardware store.  We typically use WD-40 Silicone Spray, but any silicone spray will do.