I have built two 60 sized Kangke Staudachers, the Sport Cap, the 60 size Cap, and the SK50 (A very underrated model, IMO)... I have two more Caps (120 and 60) NIB, and I'm in the process of recovering the Sport Cap...

On the Staudachers, Sport Cap, and 60 sized cap... I mounted two mini servos in the tail for the elevators (Hitec 225's or the new GWS minis).. put pull-pull on the rudder... Hitec 605 mostly.... Saito 100 on the Staudachers, and 60 Cap.. balances with no extra weight... the battery is behind the fuel tank... I used a thunder tiger 91 four stroke on the Sport Cap... it balances with no addition weight, and is a 3D type of flyer now... Just don't cram the control surfaces together when hinging.. leave some gap, so you can get the throw.....

Hardware is so-so.... I used the control-horns, tail wheel, fuel tank, and CA hinges... but I tossed the control rods, clevises, and the main wheels.