Oculus lens creates a weird smudge when position tracking i turned off

hello everyone. i am trying to make a vr game using unity. i attached the ovr camera to the head of a character but it doesnt move properly and when i switch off position tracking the movement then works but there's a weird smudge on the screen like the 2 eyes of the oculus are fixed in one position. i hope i have given a good description of my problem. can anyone help with a good way to link the ovr camera to the head properly. Thank you.