What was found
BOTH LT AND RT BRAKES ARE GRABBY, THE RT BRAKE HAS HIGH PEDAL BREAKOUT FORCES CAUSING A JUMP IN INDICATED PRESSURE FROM 0 TO 250 POUNDS WITH BREAKS APPLIED PULLS TO THE RT HAVE TO MODULATE BREAKING TO KEEP THE ACFT STRAIGHT. INSPECTED THE BREAKS NO FLUID OR OTHER ISSUES NOTED. WEAR PINS ON THE RT ARE AT LEAST .5 EXTENDED. FEELS LIKE THE PEDDLE LINKAGE NEEDS CLEANING AND LUBING. HEAVY BREAKING SEEMS TO WORK BETTER, LIGHT BREAKING WHILE AT TAXI SPEED VERY DIFFICULT TO BE SMOOTH. REMOVED FAULTY INBD AND OTBD BRAKE METERING VALVES AND INSTALLED 2 O/H BRAKE METERING VALVES IAW MM 32-44-05. OPS AND LEAK CHECKS GOOD WITH NO DEFECTS NOTED.