Adjustment
Put your rudder at dead center. Turn the wheel to the port and count the turns to the stop. Return the rudder to center and then count the turns to the starboard. Check the angle of the rudder at both. If they don't equal, you may not be getting full rudder starboard. You can make a few adjustments to the cables to equal this out.This may not be your problem, but it would be the cheapest and easiest way to start trying to identify the problem.Good Luck