I have a full scale P 51 Mustang. I am having trouble setting my flps and elevator mixing so I can put in some elevator trim when my flaps are deployed. I am using a JR 662 radio. The only problem I do not like about this rabio is it ONLY has one setting for the flaps. I would I to set them for take off at 7 degs but I need more flaps for landing. Should I buy another JR radio taht has the landing mode and several flap setting or can some one give me some lite on what I am doing wrong.
I have landed the plane seval times with no flaps, but I am coming in pretty hot on a grass field and the grass does help to stop me. I have stoped flying the plane until I can get the elevator set with my flaps and also I need to settle on which flap setting I am going to stay with if I stay with this radio.

Pilot P51