You can lose some of the servo's torque in friction losses from things rubbing. You use up battery power as well. On my last CAP232 120 I used short pieces of the antenna tubing where the cables exited in the tail on both sides. The cables rub inside the tubes but that's the only way I could do it without cutting huge slots in the fuse. That has worked great for about 75 flights. There are others that route cables inside teflon tubing and they bend quite a bit so they must rub. They work fine from what they say. If I had a 40% Carden, I would make sure nothing rubbed but that's a entirely different level of plane.