CG location is just behind the main gear......
Sorry - I must disagree with that. If you have the CoG BEHIND the mains - the model will tip on its tail without you touching it. The mains should be BEHIND the CoG but only just enough to allow the model to sit on all wheels on the ground ... but still allow model to rotate on take-off.
I agree that landing nose wheel first will usually end up with bent nose leg ... but it also happens when landing mains first as the speed drops - the nose bangs down.... usually when landing at minimum airspeed. Landing with a slightly higher airspeed allows a touch down to 'flow' into all wheels on ground after mains touch.