ORIGINAL: SpinnerRow
I had tried some 4-40 rods but they were too stiff and the curve of the tubes was too much inside the fuselage. The HS-5625 wasn't centering right and buzzing constantly. If I pushed down elevator, it would stay slightly down. If pull up, it stayed slightly up when I let go of the stick. So I straightened the stock pushrods out and put some carbon fiber tubing over them which made them much stiffer. Man, I hate pushrods!
Spinner does your book show those tubes with push rods in them? Mine looked like they were for routing an antenna . here is my pushrods install .