I was never truly satisfied with the original design of the control cables for the rudder trim on the vertical stabilizer, particularly with their routing through the center of the rudder control mechanism.
In the neutral position of the rudder, everything looked fine. However, when the rudder is fully deflected, the control cables make contact with the side walls of the slot in the center section, get deflected, and even rub against each other.
The reasoning behind this design is beyond me. From my perspective, such a design is simply not acceptable.
After much deliberation, I was able to find an alternative solution:
The control cables are now routed through three rotating shafts in the center of the rudder control mechanism. This ensures that the cables no longer come into contact with the side walls and remain properly separated from each other.
The aluminum part of the rudder control mechanism had to be completely redesigned, along with the housing for the shafts and their corresponding ball bearings.
The old part from the original design went straight into the trash.
Problem solved.