RE: Katana 50 by Hangar 9
I replaced mine with DU-Bro 2mm ball clevises and they fit the included pushrods. They are a little shorter than the included clevises. They worked okay on both ends of the aileron pushrods but had very little thread engagement on the elevator pushrods so I used the included nylon snap clevises on one end and replaced the ball end on the other.
I added some black and white "swoosh" panels to the red and yellow on the underside of the wing for more contrast. It could still use something more distinct in my opinion.
Had several flights with mine over the weekend and I'm really enjoying it.
Jaybird