I can certainly understand the need to maintain the proper/specified cable tensions in the various control systems to reduce the possibility of flutter. The only spec. requirement that bothers me is for the Rudder Cable system. I own and fly a tail dragger version of the XL and there really isn't much of a way to control this cable system tension. The right and left pedals are independently connected directly to the rudder and are not interconnected. Tension can vary from very light in normal flight (or zero when the autopilot is engaged and no feet are on the rudder pedals) to relatively high depending on how much braking action is used or how exciting/tense your landing may turn out to be. (It's a tail dragger remember.)

Jim Timm