As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAXI OUT WAS FINE. ON TAXI IN, FIRST RIGHT HAND TURN NOTICED ABOUT HALF WAY THROUGH THE RIGHT TURN, TILLER BECAME IN EFFECTIVE AND USED DIFFERENTIAL BRAKING TO STRAITENED UP. TRIED NEXT RIGHT TURN AT GATE VERY SLOW, AGAIN NO AUTHORITY. STOPPED THE AIRPLANE AND CALLED TO BE PULLED IN. REMOVED AND REPLACED RIGHT NOSE LANDING GEAR STEERING CYCLINDER OPS AND LEAK CHECK NORMAL REF MM CHAP 32-52-30-4.