What was found
DURING PHASE NR 1 ENGINE RUN, NOTICED A SLIGHT GRINDING NOISE WHEN PILOT'S CONTROL WHEEL WAS TURNED LT OR RT. A SLIGHT AMOUNT OF 'RATCHETING' COULD ALSO BE FELT IN THE WHEEL. BEYOND THAT, THE CONTROL WHEEL MOVED FREELY WITH NO BINDING. AFTER REMOVING PILOT'S CONTROL WHEEL AND UPPER YOKE ASSY, DISCOVERED THE AILERON CONTROL CABLE HAD BEEN MISROUTED. TWO CABLES WERE ROUTED THROUGH ONE PULLEY AND WERE RUBBING AGAINST EACH OTHER. SUBMITTER STATED PROPER INSTALLATION SHOULD HAVE ONE CABLE PASSING AFT OF PULLEY AND NOT IN PULLEY GROOVE.