What was found
(CAN) AT PREFLT, PILOT REPORTED A 'BINDING' AT EXTREME RT PEDAL. MAINT DISCONNECTED SECTIONS OF SYS & COULDN`T REPEAT. DAYS LATER PILOT REPORTED SIMILAR BINDING PLUS A 'BANG' BEFORE MOVING SMOOTHLY AGAIN. DURING INVEST, ENGINEERING FOUND BINDING WHERE 2 CABLES JOIN TOGETHER AT TAILBOOM DISCONNECT. INNER CABLE HAS A MACHINED HEX SECTION THAT MATES WITH A HEX INSIDE CABLE SHEATH. AT EXTREME, PEDAL INNER HEX EXITS SHEATH HEX & IS PRELOADED, & TWISTED (10-20 INCH). WHEN PEDALS WERE MOVED TOWARD NEUTRAL INNER CABLE HEX ATTEMPTED TO ENTER SHEATH HEX, & BECAUSE OF A MISALIGNMENT, BOUND UP, & WHEN ENOUGH PRESSURE EXISTED, IT WOULD SNAP INTO ALIGNMENT (CAUSING BANG & BINDING). BOTH CABLES CHANGED, RETURN TO SERVICE.