i had a jr xf 622 radio in a old plane i bought real cheap an i was comin in for landing an it went right rolled into the ground but the plane was ok i strighed the landing gear an flew it the same day but this time after a couper of mins of flyin it was lilke the alerion servos were revesed the they went back to nomal then back again well the plane crashed againn the same way an it was totaled well i put that radio in a diffent plane an it totaled that one too so i put a new reciver an cystil in it an got it in a new plane but when i fly that one it dose the same thing the last to times i flew it an it will only do it for a sec with this one then fly normal till i take off again what do you think is the problem