RE: modeltech twister
The particular clevises in my kit didn't snap tightly closed, so I replaced all of the clevises with the Dubro nylon composite clevises. They are the black nylon ones with metal pin and locking connector. I also made new 2-56 pushrods with Z-bends on the servo end. This was needed in my case as the supplied pushrod diameter was a bit undersized to work with standard 2mm clevises. I had 2-56 pushrods and 2-56 clevises on hand. I used the supplied control horns for the control surfaces. Note: in my kit, the horns supplied for the aileron are different than the photos in the manual. The aileron horns have 3 screws securing the triangular base, and the screws are very long, so they can pass through the thick aileron. Stock tailwheel was used. Fuel tank was replaced with Hayes 11 oz tank wrapped with fiberglass tape, only because I'm running a YS with a highly pressurized tank. The supplied tank seemed fine for other engines and featured a metal ring to reinforce the neck.
FYI - In mine, I found that adding some differential throw in the ailerons made the plane track even more neutrally in turns. Mine tracked a little tail down when banked. So, using my EPA (end point adjustments) I dialed in approx 120% down aileron vs 140% up aileron as I recall. Tracking is now spot on. I would not do this, however, until after you've test flown yours and see if it exhibits this phenomenon. As indicated above, I found the stock aileron throws to be a bit "hot". I used the recommended Sport settings as low rates and 3D setting as high rates. Even with expo, the ailerons were more responsive than I like for low, so I dialed them down just a little, for low rate only. High rate was fine for 3D.