ok then, is it hard to turn the bars from side to side? if they are then your bearings may be in upside down. i did this with an fsa pig. your top cap isnt touching the top of your steerer tube on forks? if so tightening it will just pull the star nut up. all parts are there in correct order? the headset is pressed in all the way? and in straight? theres a few things for you to check