I've known people to use all different methods with success. I prefer ball links at both ends my self, but have been known to use z-bends, or kwick links for throttle or nose wheel applications. The moral of the story is like ( I think it's Will Geer) that says check your blood sugar, check it often. The same applies to every aspect of model airplanes, check them top to bottom front to back, Don't forget the transmitter, IE right model loaded into the memory, and battery condition. Always happy to help if I can Garry