I don't konw what your level is, nor what the SkyMax 40 is. But, I am familiar with 'snake' controls, such as the Sullivan rods. I use them either exclusively or in a mix with rods in my planes. I recently built a Midwest Aerobat. The rudder control rod had a bind no matter what I tried to do to remove it. The main reason for that was where the exit hole was in the fuselage and where the rudder control horn was located... both were very close to each other so there was not a lot of room for moving the control out or in on the control horn (for mechanical throw adjustments). I opted for using the Sullivan rod for the rudder but was able to keep the stock rods for the elevator.

The only issue with using these sort of rods (Sullivans) is that you must secure the outter casing in several locations to keep them from bending from the torque. If you do that, they perform, and perform very well, with the added plus that they are "slippery" inside the casing allowing for you to go around obstructions and still have them move as though they were totally free and straight.

Sullivan makes several types including a carbon fiber version which is very strong.

DS.