What was found
DURING CRUISE FLT AT FL330 AT .82 MACH THE A/C PERF U/C ROLL DOUBLETS (DUTCH ROLL MOTION). A/P AND STAB WAS OUT OF TRIM WITH A PITCH UP ATT DEV. TRIMMED THE STAB AND LEVELED A/C AND RECONN A/P. A/P WAS IN SYS-B. WHEN RECONN, THE A/P TRIMMED NOSE UP, HAD TO DISC A/P AND APPLY 20 LBS OF DOWN ELEV FORCE TO LEVEL A/C. TRIED SYS-A AND IT WAS WORSE. THE ELEV POS IND SHOWED A SPLIT STAB (LT HIGHER THAN RT). DECLARED AN EMERGENCY, DUMPED 9K OF FUEL AND WITH A/P OFF A/C TOOK MORE PRESS TO TURN RT THAN LT. CHECK PER MM 27-10-000-5, CHECKS NORMALLY. CHECKED ALL CABLES AND PULLEYS ASSOC WITH AILERONS, ALL CHECK NORMALLY. REMOVED LT ELEV POS SENS PER MM 22-11-071-5 REF WRI 22-10/7229 AND 22-30/7234.