What was found
IN CLIMB DETENT IN A CLIMB APPROX 27000 FEET R ENGINE EXCEEDANCE CAS ILLUMINATED. WE DID NOT NOTICE A RED ENGINE INSTRUMENT BEFORE WE REDUCED POWER. CONTINUED CLIMB AT A REDUCED POWER SETTING, AND WHILE FNISHING CHECKLIST, N2 GRADUALLY CLIMBED TO 98.1 AND R ENGINE EXCEEDANCE AGAIN ILLUMINATED. N2 BETWEEN LEFT AND RIGHT ENGINE WERE SPLIT BY ABOUT 4-5% AND ITT BY ABOUT 40 DEGREES, BOTH OF WHICH RH ENGINE WAS HIGHER. REMOVED AND REPLACED 5 WORN INLET GUIDE VAIN ARMS. IAW LMM 72-30-10.