I tightened the cables at the quadrant because there seemed to be a little slack. However when sailing in fairly heavy weather (with too much sail resulting in strong weather helm) a lot of force was required to keep the boat on the desired course. I'm guessing that the bearings are bad in the rudder post and the additional force caused by tightening the cables combined with the dynamic forces is resulting in friction / binding on the rudder post. Anyone else have similar experience?