I'll look into those helicopters.

I have a TREX model of FMS that I fly. I havent had any problems flying that one.

Whenever I try to fly it in real life (with training gears), it tends to move backwards and to the left. I try my best to counter act this but I get to the point where it seems that the helicopter is about to tip over.

I suspect its a mixture of it not being setup up right and me throttling up too slowly.