What was found
WHILE ON APPROACH, AIRCRAFT YAWED 15-20 DEGREES RIGHT OF RUNWAY CENTERLINE. MAIN GEAR TOUCHED PAVEMENT AS GO-AROUND WAS EXECUTED. ON RE-APPROACH, A FULL STOP LANDING WAS ACCOMPLISHED WITH NO FURTHER INCIDENT. BACKGROUND INFO RELATIVE TO CURRENT INCIDENT. RIGHT PROP PITCH LIGHT CAME ON PRIOR TO TOUCHDOWN. AIRCRAFT YAWED TO RIGHT (PROP PITCH BELOW FLIGHT IDLE STOP). FOUND RT GROUND IDLE SOLENOID BRACKET NOT CLAMPING REVERSE WIRE ROPE HOUSING TIGHTLY. TIGHTENED BRACKET AND ADJUSTED ROLLER. GROUND RUN CHECKED SERVICEABLE.