steering knock?

im not sure if this is the right place or not but after installing my lift its been knocking when i turn the wheel but it only knocks in one spot ive looked while my friend turns the wheel back and forth and at first it was the trackbar was loose but i tightened and it keeps knocking my friend said its just a lift thing cuz it was happining to his lifted f-150 anyone have the same problem and if so what was the problem?
thanks

Make sure all your bolts are tight, double check and mark them. That way if they loosen up you can see it easily. Check your knuckles make sure they are tight as well. Jack it up and try shaking on everything to check to see if something is loose.

How much lift?