It is the Multiplex/Tangent plane you have?
If so it is perfect to go for FL-servoes from Multiplex in the wings. These servoes are not cheap anyway. The Hitec HS-125 is always a good choice in thin wings... I have some MPX-models but not the Kranich. My MPX Schampus flies using FL-servoes in the wing and standard Graupner 5077 for the tail. A friend of mine have one Kranich, think he use a Kontronic in the nose and it climbs like an elevator! Heavy though...
Among my projects there are two MPX`s, Alpina Magic and ASW27B. Both will get HS-125 in the wings.