Hi,
A friend of mine has one Stuka like yours. It fly with an OS 91 Surpass, but really it is not easy to make a fine landing with this bird. That is the only think i can tell you. When you approach with flaps you have to give 1/3 throttle because the plane really stops with flaps. So you have to attenuate the elevator channel to put it on the ground very soft to avoid the triple jumping.
Bye Bye