As you know, there is an AD on the rudder cables AD50-17-02
50-17-02STINSON: Applies to All Model 108 Series Aircraft.
Compliance required as indicated.
A number of cases have been reported of broken core strands in the rudder cables where they pass over the pulley at fuselage Station 18.75 (first pulley aft of rudded pedals). To preclude failures, the following is therefore required:
1. Within the next 25 hours and at every 100 hours thereafter the following should be accomplished. Remove the rudder cables from the pulleys, bend the cables in a tight “U” where they pass over the pulley, being careful that permanent kinks are not formed, and inspect either visually or by touch. Replace all cables showing signs of breakage.
2. The above inspection may be discontinued and the normal inspections resumed if the following is done: Remove the AN 210-3A pulleys at fuselage Station 18.75; modify the pulley brackets and install larger pulleys, P/N 41001-2, and two cable guards, P/N SK253-2, in accordance with detailed instructions in Piper Service Bulletin No. 114 or an equivalent modification.
So, you can buy the KIT from Univair, but the cost is very high. So I started trying to find another PULLEY that was the same size.
What I determined is there was not another pulley that had the same dimensions. So I inspected my current ones and found they are serviceable and I reinstalled them with the new rudder cables.