Translating is caused by the tail rotor pushing the helicopter sideways in its attempt to fight the torque of the main rotor.

It's worse in ground effect which is 1 to 1.5 rotor spans off the ground but you always get it no matter how high you are hovering. Trim the cyclic to the right a bit to correct for it. The helicopter will hover leaning a bit to the right, its perfectly normal, even the full scale ones do it (though most of them lean left because the main rotors on most full scale spin opposite most of ours)