What was found
AIRCRAFT DEPARTED AND CREW DETERMINED THAT TURNS TO THE RIGHT PRODUCE A STIFF CONTROL YOKE. RETURNED AND LANDED WITH NO FURTHER ISSUES. MAINTENANCE VERIFIED THE DISCREPANCY. MAINTENANCE LUBRICATED AILERON CENTERING MECHANISM BELLCRANK HARDWARE, ROLLER LEVER ASSEMBLY AND ATTACH POINTS ON RIGHT HAND WING. VERIFIED CONTROL WHEEL FORCE WAS WITHIN LIMITS. A FUNCTIONAL CHECK FLIGHT WAS CONDUCTED WITH SATISFACTORY RESULTS. AIRCRAFT WAS RETURNED TO SERVICE.