With the TT hubs and mk 5 rod ends have you tried to steer left or right to full lock on?
TT rod ends are shaped to avoid the rim hitting the rod, they must be shaped like that for a reason.
Also remember to have nuts with a very large shoulder on both ball bearing and rod en on the hub, to keep the steel reinforcment in the alloy hub in place.
As the other two has said, get the proper TT solution for the steering
And i'll second the wish for both brakes and öhlins suspension, how do you rate both?