The only time the engine's torque will overcome the wings is when the wings aren't moving fast enough through the air, so either your vertical is not all that great and the plane is actually slowing down quite a bit on the upline. That, or you are BEYOND rediculously overpowered by putting a 46cc engine on a 1.20 size plane, which means you are running way more prop than the plane was designed for. You could try less pitch , like a 20X8. It will decrease the torque